Tap into Learning Volume 2: Number 2 March/April 2009 Science Magazine for Kids and Classrooms Ecosystems Check out our website: http://www.spigotsciencemag.com Books, Links, Teaching Guide In this Issue: *Biomes around the World *Biodiversity *Adaptation by Plants and Animals *Ecosystems *Food Chains *and much more! Our Mission The mission of Spigot Science Magazine is to help children understand how and why the world works and to inspire young minds to be curious and thoughtful stewards of the world that will be theirs one day. From the Publishers It’s true. Science is all around us. Actually we live in science: inside a niche that’s inside a habitat, that’s inside an ecosystem, that’s inside a biome. We both live in the Deciduous Forest Biome. Here in our biome we enjoy all four seasons. We love making snowmen in winter, planting our gardens in spring, collecting the colorful leaves of fall, and playing on the beach and in the ocean in summer. Right now we are awaiting the arrival of spring. (See poem, p.14.) Last summer, Dave visited several different biomes in Alaska. He saw icebergs calving (see WATER issue, p.20) and a rainforest where it is cold. He came back with lots of pictures and a great interview (see p. 17). It got us thinking…what other biome have we ever seen? Up until now we hadn’t realized that the ocean itself is a biome. Getting ready for this Ecosystems issue, we learned that the ocean is one huge biome made up of many ecosystems. Valeria lives about a half hour from that gigantic biome—the Atlantic Ocean at the Jersey shore. She took her dog, Star, there to pose at the Ocean Biome (see picture below). Learn about other biomes in two articles on pages 10 and 13. In this issue you’ll also find a lot of information about how energy is used in the food pyramid (p. 7) and how you can discover habitats. You’ll learn about the snow geese in Valeria’s backyard habitat on page 9. There is so much more about biomes, ecosystems, habitats, and niches in this issue. Spigot Science Magazine Important Legal Information Spigot Science Magazine is owned and operated by Daval Publications, LLC PO Box 103 Blawenburg, NJ 08504 David Cochran, EdD, Publisher and Chief Learning Officer Valeria B. Girandola, MSEd, Publisher and Editor-in-Chief Official Website: http://www.spigotsciencemag.com Email address: [email protected] Staff writers: David Cochran, Valeria B. Girandola Editorial Consultant: Nathaniel Hartshorne Photo/Graphic Credits Cover photo and many other pictures in this magazine are from Microsoft Media Elements and their inclusion complies with the terms of their permitted use. Dave Cochran Valeria Girandola Publishers Additional credits are cited on the pages where pictures appear. Ponder is a trademarked entity owned by The Ponder Group, LLC. It is used with permission. Publication Schedule Spigot Science Magazine is published online five times per year in September, November, January, March, and May. It is a free magazine. Copying/Using Articles Articles from this publication may be used in schools or homeschooling without permission. Articles may not be distributed for commercial use without the written permission of Daval Publications, LLC. V. Girandola Copyright © 2009. All rights reserved. SPIGOT - http://www.spigotsciencemag.com Star 2 March/April 2009 Volume 2, Number 2 ~ March/April 2009 Connections Across the Curriculum In this Issue Social Studies From the Publishers ..................................... 2 Alaskan Wildlife Center Saves Animals for Study ................... 17 A Potpourri of Pictures from Kroschel Films Wildlife Center ........ 19 Ellen Swallow Richards An Early Ecologist By Susan MacDougall ............................. 20 Scientists Are People Too........................ 21 Science Think Like a Scientist.................................. 4 Divisions of Our Earth ................................ 5 Energy in the Food Pyramid ........................ 7 Seen and Unseen Habitats in My Backyard By Valeria Girandola ................................. 9 Geography Health Our Body, Our Ecosystem....................... 22 World Biomes ............................................ 10 The Arts Math The Peaceable Kingdom ......................... 23 Sing about Ecological Niches ................. 24 Too Many Rabbits, An Ecosystem Gone Crazy ..................12 Books Ecosystems Book Reviews By Dr. Patricia Richwine .......................... 25 Language Arts Spigot Theater—Biomes ........... ................13 Next Issue Preview By David Cochran A Deciduous Forest Eco-Poem By Valeria Girandola ................................. 14 Omnivore Match..................................... ...15 Drop It– A Word Game........................... ...16 Changing Earth ..........................................27 When you see a picture of Ponder in Spigot, you’ll know it’s time to think about what he’s saying. Look for BOLD words throughout Spigot. These are vocabulary words you should learn. If you don’t know them, look them up online or in a dictionary. SPIGOT - http://www.spigotsciencemag.com 3 March/April 2009 Science Connection Think Like a Scientist Activities 1. Take pictures of your ecosystem: vegetation, weather, land, and animals. Take the same pictures each month. Note the similarities and differences. 2. Follow the growth of plants in your classroom through pictures you take. 3. Make a photo essay of a field trip or a science project. SPIGOT - Scientists today have an amazing tool to use to help them capture and save their discoveries. It’s the camera! Scientists use cameras to document their discoveries, to prove their hypotheses, and to present their findings to others. Since science is all around us, everyone can use the camera to think and act like a scientist. In 1871, a professional photographer, William Henry Jackson, traveled with a survey team that was exploring and mapping the West. With his camera he took pictures of the land formations of the Yellowstone area in the Wyoming Territory. At that time no member of Congress had ever seen Yellowstone. They had only heard amazing stories of wildly colored springs, magnificent waterfalls and strange rock formations in an almost mythical ecosystems. (See Ecosystems on the next page.) Because of Jackson’s splendid photographs of Yellowstone’s unique ecosystem, in 1872, Congress designated Yellowstone as the first national park in America. Jackson’s photographs helped to save a majestic ecosystem for posterity. Taking pictures gives us a great way to show changes. Certainly you have pictures of yourself taken through the years. When you line them up, it’s fun to see how you have grown. Taking pictures of a garden throughout the year http://www.spigotsciencemag.com 4 shows how weather, flower and plant, and sun and shade changes. On the next field trip you take, make sure you have your camera along. Take pictures along the way, write about them, and share them. You’ll be thinking and acting like a scientist. . Colin Faulkingham Wikipedia Commons Old Faithful geyser in Yellowstone National Park March/April 2009 Science Connection Divisions of our Earth EARTH The Earth is made up of many different places—high mountains, deep ocean gorges, rainforests, and deserts. These places have different geographies (physical features like mountains and plains) and climates (weather patterns including temperature, precipitation, and wind). In each of these places, there are plants and animals that interact with each other. BIOME A biome is a large area that has similar plants, animals, and climate. Scientists mostly agree that there are at least ten large biomes on our planet Earth. Think about how unlike a desert and a rainforest are. Deserts are very dry, getting less than 20 inches (51 cm) of rainfall a year. Rainforests, however, are very wet with a lot of precipitation – between 50 to 260 inches (125 to 660 cm). Both of these biomes are very warm, but the plants and animals that live there are very different from each other. You might find a cactus plant in the desert, but you’d never find a macaw, the brightly colored parrot of the South American rainforests, flying there. You’d find lush, tropical trees with lots of animals in the rainforest, but you’d never see a desert animal like a sidewinder rattlesnake there. Biomes have unique types of plants, animals, climates and geographies. ECOSYSTEM Plants and animals support each other in communities called ecosystems. This word is a combination of ecology and system. Ecology is the study of the relationship between living things and their environment. A system is a group of interdependent parts that together make a working whole. An ecosystem is an area where plants and animals rely on each other to live and reproduce. An ecosystem can be very small, like in a tiny pond where plants provide food for fish and frogs or very large, like the Arctic, where polar bears and sea lions live by eating fish and other wildlife. Continued on next page SPIGOT - http://www.spigotsciencemag.com 5 March/April 2009 Science Connection Continued from page 5 HABITAT A habitat is like a neighborhood where things live. It has a suitable arrangement of food, water, shelter, and space in which an animal can live and raise a family. Within one ecosystem there may be several habitats, some where certain animals or plants live, and others where different species live. NICHE A niche is what a particular species does in its habitat. It is how it uses its environment to live, grow, and protect itself. It is its place in the community to which it belongs. Many different organisms can live side by side in any one habitat. But no two species can occupy the same niche in the same environment for a long period of time without depleting the resources available to both. In all natural environments, both living and non-living things interact. A stone may be the home of lichens which grow on them. Ants may live in certain non-living soils. All of the Earth’s ecosystems are connected to each other and they are always changing. Change is one of the big features of our world. As the world changes, plants and animals adapt to new environments. This change is what makes life so exciting. Activity Studying Your Environment Learn more about your own environment. 1. Go to: http://www.blueplanetbiomes.org/ world_biomes.htm Eco-Humor 2. Describe the biome where you live. What are the climate and geographical features like? 3. Describe an ecosystem in your environment. What kinds of plants and animals are found there? 4. Describe a habitat in the ecosystem where you live. Who lives there? 5. Describe a niche within that habitat. 6. Make a diagram, picture chart or other graphic organizer to show your environment to others. Tomcat: What do you call the habitat where you live? Mouse: It’s my Eek-o-system. ~~~ Molly Mouse: I hear you’re going to college to learn how to scare cats. Marvin Mouse: Yeah. I’m studying Eek-ology. ~~~ Make up a few ecology jokes of your own. What do you think a biome might say to an ecosystem or what might a habitat say to a niche? Have fun! SPIGOT - http://www.spigotsciencemag.com 6 March/April 2009 Science Connection Energy in the Food Pyramid "When we tug on a single thing in nature, we find it attached to everything else" John Muir, Founder of the Sierra Club, dedicated to protecting and restoring the quality of the natural and human environment. Living organisms need energy to live. Plants need energy to grow leaves, and animals need energy to breathe and move about. The source of all energy for plants and animals is the Sun, the star in our solar system. The Sun transfers its energy by light rays to the Earth. It heats the Earth and, through the process of photosynthesis, causes plants to grow. Plants are the producers of food for all other parts of the food chain. Secondary Consumers Some animals eat only other animals. These are called carnivores. (From carno, meat; voro, to eat) They get energy that is second-hand. Their energy comes from the other animals that got their energy from the plants. These animals are called secondary consumers, and they feed on primary consumers. A snake that eats a grasshopper and a cat that eats a mouse are secondary consumers. Tertiary Consumers Animals that eat secondary consumers (the snake and the cat) are not only carnivores. They are also called tertiary consumers. Green grasses, fueled by the Sun’s energy, These animals are often larger and are at the bottom of the food pyramid. there are fewer of them. Lions are an example of a tertiary consumer because they eat other larger animals. Primary Consumers Small insects and mammals eat Some animals eat both plants the plants. Sometimes large and animals. These are called animals eat plants, too. Animals omnivores. (From omni, all; voro, that only eat plants are called to eat.) Bears eat fish, other herbivores. (From herba, plant; animals, and grasses. Turtles eat voro, to eat.) When an animal eats crickets and algae. a plant, energy and organic matter are transferred from the plant to the Balanced Ecosystem animal, giving it energy and For an ecosystem to work there nourishment to live and grow. needs to be the right mix of plants Animals that eat plants are called and animals so that energy gets primary consumers. A planttransferred properly. If there are eating insect, like the grasshopper, not enough plants, there will be is a primary consumer. Other fewer primary consumers, even less animals like mice, deer, and rabbits secondary consumers, and almost are also primary consumers. no tertiary consumers. Lions are examples of tertiary consumers. Even though not all the energy is transferred between levels of the food pyramid, it isn’t totally lost. It changes to heat in the atmosphere. Energy can never be lost; it can only be changed from one form to the other. This is the Law of the Conservation of Energy. See the ENERGY issue of Spigot, Jan/Feb 2009, at www.spigotsciencemag.com. Continued on next page SPIGOT - http://www.spigotsciencemag.com 7 March/April 2009 Science Connection Continued from page 7 These food levels look like a pyramid. The large base of the pyramid represents the primary consumers. The smallest number of consumers is at the top. At each level some energy is lost. This is because each time there is a transfer of energy from one level to another, not all the energy is transferred to the animals. Some of the energy from the animal that is eaten goes to the animal that is eating it and some of the energy is lost as body heat. Some energy is lost from plants as they give off heat and oxygen. Primary consumers give off heat energy, so there may be only half of the original energy left for secondary consumers. In turn, the secondary consumers give off more energy, so the tertiary consumers receive the least amount. Animals always depend on the next level down on the pyramid for food. If the producers (plants) were to suddenly disappear, all the animals on the rest of the pyramid would die. If the next level down is abundant, the animals will thrive. In a lush tropical rainforest there are plenty of plants. Many animals are able to live there because of the large amount of energy in the food pyramid. In a dry desert, there are few plants, so there are some primary and secondary consumers, but few tertiary consumers. To keep an ecosystem in balance there needs to be many plants, many primary consumers, fewer secondary consumers, and the fewest tertiary consumers. This allows the system to have the most energy at the bottom so that the animals at the top will have enough energy to live. Activities 1. Go to these web sites to learn more about the food pyramid: http://www.arcytech.org/java/ population/facts_foodchain.html or http://www.vtaide.com/png/ foodchains.htm. Draw a blank pyramid and divide it into three levels - primary, secondary, and tertiary. Do some research in books or on the Internet to write examples of plants and animals that are at each of these levels. 2. Create a story, song, poem, or video that explains how the food pyramid works. Ponder Humans are at the top of the food chain. We’re tertiary consumers. Why is it important for humans to be concerned about what happens to all the levels below us on the food pyramid? Tertiary Consumers Secondary Consumers Primary Consumers SPIGOT - http://www.spigotsciencemag.com 8 March/April 2009 Science Connection Seen and Unseen Habitats in My Backyard By Valeria Girandola In the back away is the low fields over my clay pot feeder I fence, I see a cloud have just made of white snow geese them for birds that settling onto the sod stay close to the fields, cold and ground to eat. Little hard in the winter sparrows and air. Actually I hear juncos hop about them first. Their making tiny bird gaggling high in the prints in the snow. skies swoops closer Scrappy blue jays and closer. I run dart into the party with my camera causing a flutter of hoping to get the wings. The primary perfect picture of colors of the red their circular cardinals, blue jays settling on the sod. V. Girandola and goldfinches are After a while, so bright in the These snow geese flock together in the winter months and when they they lift into the air, migrate. snow. Gray again a white cloud, pigeons watch from and move into the skies, still circling. I know that bare maple tree branches. When others seem to have when I go by the lake in town they will be sitting on finished, they glide down from their perches to partake the cold ice as still as statues. of the spread below. Daily I set out my bird feasts. In Under the oak trees lining the driveway, wood summer my feathered guests keep my garden free of mice nibble on the scattered acorns. A sparrow hawk insects. Like faithful friends we watch out for each glides in from the back field searching for a tasty other. tidbit. Inside the oak, wasp-like ichneumon flies wait to dine on spring caterpillars as they feed on the young Activities green leaves. 1. Use a camera. Make a photo essay of a habitat in Closer in my backyard, I spy flashes of red, then a backyard, park, or forest near you. yellow in the tall snowy pines surrounding my garden. I know the bright red cardinals and their soft brown 2. Make a clay pot feeder mates will soon be coming to my feeders. So will the Get a large clay flower pot and a large clay yellow goldfinches. My binoculars are ready to treat saucer. my eyes, as the birds feast on the seeds I set out for With the help of an adult, glue the saucer to them. My bird feeders are swaying in the winter the bottom of the overturned pot. winds. They are filled with sunflower, thistle, and a Let the glue dry for a day or two. host of tiny millet seeds. A square of suet, offering Decorate with outside paint, or leave it plain. nutritious warmth and energy, hangs from vines on Fill with seeds and put it outside where you the trellis. For my ground-feeding guests, I have swept a spot bare. There is a scattering of all I have to can see it. offer, a smorgasbord for the birds. A little farther This also makes a great plant or candle stand . SPIGOT - http://www.spigotsciencemag.com 9 March/April 2009 Geography Connection World Biomes Different Climates, Different Geographies Jim Conrad, Naturalist, http://www.backyardnature.net/ecogo.htm The major biomes of the world are shown in colors. Depending on the book you read or the web site you visit, you may find different names for the biomes of the world. Scientists and geographers don’t always agree on the names of the biomes or where they begin and end.. What is important is that we understand how biomes and the plants and animals that live in them differ from others around the world. For this article we used the biomes listed in Usborne’s Science Encyclopedia. Some names on the map are different from the names we use in this article. The world is generally divided into areas that have the similar kinds of climates and geographies. These separate areas are called biomes. They have similar plants and animals, similar makeup of soil, and are about same height above sea level. They are named mainly by the kinds of trees and bushes—the vegetation—that grow there. We will explore eleven biomes in this article. Tundra The land in northern Europe, Asia , America and Greenland is cold, vast, and treeless. Six months of the year the sun does not rise. Temperatures are around -30 degrees F. It is impossible to grow vegetation in the permafrost subsoil. Polar bears, caribou, and grey wolves live there. Coniferous Forest This is the largest biome of the world. Most of the wood that is used in paper making comes from the pine trees in Alaska, Canada, northern Europe and northern Asia. There are other cone-producing trees, such as spruce, hemlock, and fir, growing there. Another name for the biome is the Taiga. Moose, the snowshoe rabbit, and the horned owl live in this climate. The winters are very cold. Many of the animals survive the winters by migrating or hibernating. Tropical Rainforests There are rainforests in the Amazon River area, Central America, West Africa, Western India, Southeast Asia, and Australia. There is abundant precipitation and year round warmth. The amount of sunlight that plants get on three levels of the forest is the limiting factor of plant life. Precipitation is about 100 inches a year. Temperatures are over 64 degrees F. Both animals and birds have bright colors, sharp patterns, and loud voices and eat many large fleshy fruits. Elephants, tigers, chimpanzees, king cobras, toucans, and vampire bats live here. Tropical Grasslands This biome is located along the equator in Latin America, Africa, Asia, and South America. There are 70 inches of rainfall each year. More than 15 million species of plants and animals thrive in this biome. Continued on next page SPIGOT - http://www.spigotsciencemag.com 10 March/April 2009 Geography Connection Continued from page 10 Anteaters, jaguars, macaws, and parrots are only a few of the animals. The lands of the tropical forests are becoming endangered. People have cut and burned the trees for firewood, for building materials, for making paper, and for farming and grazing of animals. Deciduous Forests Trees that lose their leaves in winter grow here. In the fall the leaves cover the ground and provide rich nutrients for the fertile soil. This mild temperate zone stretches across the eastern part of North America, the middle of Europe, and eastern China All kinds of forests are filled with plant and animal life. The bald eagle lives here along with the black bear, deer, squirrels, rabbits, raccoons, woodpeckers, and cardinals. Oceans The ocean biome covers 80 percent of the earth. Most of that is salt water. Algae, seaweed, and bacteria grow in the water. Crabs, barnacles, clams, flounder, and mussels live near the shore. Whales, swordfish, octopi, dolphins, and tuna live farther out in the ocean. There are no insects in the ocean. The biome is characterized by changing amounts of light and temperature. Polar Areas The climate is very harsh. There are cold temperatures, to 5 degrees C, and high winds. There are no trees to provide shade. Plants are a combination of algae and fungi called lichens. Small floating plants (algae) in the ocean supply food for any animals, fish, and whales in the waters. Seal and penguins migrate here. Blue whales, the largest creatures living on the planet, along with Minke whales and Desert Humpback whales, are found off the shores. They feed on There are deserts on every continent on our planet. One-fifth of the land’s surface has very little rainfall. Two tiny krill. of the hot and dry deserts are the Arabian and the Sahara. Two cold and dry deserts are the Gobi and the Antarctica deserts. Little or no plant life, except cactuses, grows on the deserts because there is no water. Snakes, lizards, some frogs, and toads live there, along with the camel and the emperor penguin. Temperate Grasslands Grasslands exist around desert areas. They are also hot and dry. But, have enough rainfall to support the grasses and some flowering plants. The grasses are home to large and small herbivores. They are used for cattle grazing and cereal crops. The land of this biome is also known as prairies, veld, savannas, steppes and pampas. Prairie dogs, giraffes, zebras, and lions live there. Scrublands This biome is found in the west coast of the United States, the west coast of South America, and the Cape Town area of Africa and central Australia. The winters are mild and wet; the summers hot and dry. Densely growing evergreen scrub oaks, plants with hard leaves, pines, and cork and olive trees grow there. The flat plains, rocky hills, and mountain slopes are home to small nocturnal animals, chipmunks, coyotes, komodo dragons, and in Australia, red kangaroos and wallabies. Mountains Mountains are found on all the continents in two great belts: The Circum-Pacific and the Alpine – Himalayan chains or ranges. It is very cold and windy there. The land is usually treeless; however, at lower elevations some forests do exist. Mountain animals include the goat, the puma and the yak. SPIGOT - http://www.spigotsciencemag.com 11 Activities Go to http:www.enchantedlearning.com/ biomes/ or another site of your choosing. You will find information there to help you do any of the activities below. 1.Research the world biomes and color them in on a world map. Label and color code each one. You can find a free world map at: http://www.eduplace.com/ss/maps/ world.html 2. Choose one biome. In a shoebox construct a diorama of the elements of the biome: land forms, vegetation, climate, plants, animals, etc. Present the project to the class. March/April 2009 Math Connection Too Many Rabbits An Ecosystem Gone Crazy Releasing 24 rabbits on his property in Australia seemed like a good idea to Thomas Austin in 1859. There were no rabbits in Australia, so he brought some from Europe. He planned to hunt them for food. What Mr. Austin didn’t realize is that the rabbits had no natural predators, so they could live without anything killing them for food. The other thing that Mr. Austin didn’t Wikipedia realize is that rabbits reproduce a lot. One doe (a This gulley in South Australia was formed because rabbits ate female rabbit) usually has three or four kittens the grasses that held the soil in place. (babies) in a litter. She can also have five or six litters in a year. (4 kittens X 5 litters = 20 more rabbits per Meanwhile, the rabbits continued reproducing. doe per year.) This ―ecosystem gone crazy‖ experienced devastating, If half of the rabbits produced by the doe are unintended consequences of Mr. Austin’s good idea to female, they each could have another 20 rabbits per release 24 rabbits on his property in 1859. year. Yikes! Before long, there would be rabbits everywhere. In a balanced ecosystem, predators would kill and eat many of the offspring, so the Activities population would be much lower. That’s not what happened in Australia. In fact, it 1.Continue the math problem started in this article was the complete opposite. Before long, the country to figure out how long it would take to get from 24 was overrun with millions of rabbits. There were so rabbits to a million. Remember each rabbit can many rabbits that people built a huge rabbit-proof produce 20 rabbits a year, and half of them are fence to try to keep them in one area. It didn’t work female. very well. 3.Humans don’t reproduce like rabbits, but the It Gets Worse world population is growing. Look at the world Just having too many rabbits was only the start of population statistics at the problem. All those rabbits were primary http://www.worldometers.info/ . Look at the consumers so they needed plants to eat. (See the sections on the site called World Population and article Energy in the Food Pyramid, p. 7.) They the Environment. What is happening in each roamed around the countryside finding food and section? What does it mean? destroying large areas of grasslands. This affected the other animals that needed grass, so they began to run 3. Australians have tried many things to reduce the short of food and their populations began to die off. rabbit populations, but there are still millions of Grasses hold the soil in place, so another result rabbits in certain sections of Australia. What was the erosion of soil. When it rained, the soil would you do to get the ecosystem in balance in washed away. With less soil, even fewer things grew. Australia? SPIGOT - http://www.spigotsciencemag.com 12 March/April 2009 Science Connection Spigot Theater Biomes by David Cochran another way to think about biomes A world divided by climate and geography Mountains and deserts, polar caps and jungles Supporting life so diverse and special Unique and related biomes Deciduous forests thrive near coasts Shrubs and trees and animals live together Sometimes fighting for space to survive With hot dry summers and mild winters Tundra with soil so thin and cold Plants, not forests, on windy plains Shallow roots anchor in permafrost Life in short supply in these northern places Deserts high and low In mountains and plains Sometimes scorching hot, sometimes cool Always very dry Coniferous forests in latitudes high Cold and evergreen for year-round color Animals flourish in summers warm But migrate or hibernate in winters cold Temperate grasslands with seasons of life Warm and dry in the summertime Cold, wet winters rejuvenate life Plants and animals abound Tropical rainforest teeming with life Located near the Earth’s equator Hot and wet all year round Plant and animal diversity at its richest Scrublands warm and windy Dry summers with wet mild winters Home to small plants and trees Nocturnal animals thrive Tropical grasslands open and wide Wet so often, but sometimes dry Few trees with room to roam Home to many animals Mountains towering high Thin air and cold temperatures, Some plants, all of them short A place where few dare to go Continued on next page SPIGOT - http://www.spigotsciencemag.com 13 March/April 2009 Language Arts Connection Continued from page 13 Ocean biome least known of all Covering most of the Earth Rich marine life in salty brine Far more diverse than we understand Polar caps in the north and south Icy regions, cold and dry Devoid of plant life Ice-covered ground A Deciduous Forest Eco-Poem Biomes covering all the Earth Providing ecosystems for plants and animals The very core of our lives Keeping us alive to think and act and love What are March and April like in your ecosystem? We anxiously await spring after Groundhog Day, February 2nd. The question we always ask is… Activities 1. Do a choral reading with different people reading different stanzas. 2. Pick one stanza (one biome). Using the Internet or books, find more information about that biome. Draw or find a picture to show what the biome looks like. Hold it up as you read the stanza of the poem. 3. Take the part of a biome. Use creative dance or movement to show (interpret) what the biome is like. For example, you might move quite a bit if you are the rainforest, but there may not be a lot of movement in the polar region. Dance your part as the stanza about your biome is read. 4. Make your own biome poem. If you are really adventuresome, add music and sing it! You could even make a music video of it. 5. Create an artwork such as a drawing or diorama to show your biome. Ponder Is It Spring Yet? By Valeria Girandola ―Is it spring yet?‖ cries the crocus, poking up through soft moist earth. ―Is it spring yet?‖ chirps the robin, scratching closely in the dirt. ―Is it spring yet?‖ peeps the peeper, from away down by the stream. ―Is it spring yet?‖ ask the snowflakes. ―Time for us to turn to rain?‖ ―Is it spring yet?‖ honk the snow geese, sitting coldly on the ice. THEN…from the west wind wafts a soft breeze. One by one the snow geese rise. Warming raindrops hit the cool earth, bringing drinks from cloudy skies. Peepers cluster on the stream bed. Robin red-breast finds a worm. Crocuses begin their blooming ―SPRING IS HERE!‖ The whole world sighs. Note: Peepers are little frogs, no bigger than the tip of your pinkie. They sit together near ponds and streams, or ditches, singing little ―peeps‖ in the very early spring. They sound like tiny bells. Activity Compare the article, World Biomes, p. 10, with the Biomes poem on p. 13. What did you learn about biomes from each type of writing? SPIGOT - V. Girandola http://www.spigotsciencemag.com 14 Write a poem about your ecosystem. What is happening in your ecosystem now? Take pictures with your camera to illustrate your work. March/April 2009 Language Arts Connection Omnivore Match Animal List pigs cows monkeys bears sheep crows squirrels chimpanzees hawk snake groundhogs moose mice fox penguins turtles frog grasshoppers humans cats raccoons spider jellyfish lion tiger dolphins rabbits beaver chickens deer alligators goats Directions: In the space below write the names of animals in the Animal List next to the type of food they eat. Answers are on page 25 Herbivores (Plant eaters) Carnivores (Meat eaters) Omnivores (Plant and animal eaters) SPIGOT - http://www.spigotsciencemag.com 15 March/April 2009 Language Arts Connection Drop It A Word Game You Can Play Anywhere Drop It First read the word clue. Guess the word. Read the Drop It clue. Guess the shorter word. Do both words make sense? Example: A four-letter word meaning to get bigger. Drop it and it means something you do with an oar. Answer: GROW, ROW Take turns finding the answers and then make up some of your own. Word Clues First Word Drop It Clue Shorter word 1. A four-letter word meaning the king of the Jungle Drop it and it is an atom that has an electrical charge. 2. A four-letter word meaning a sheep-like animal with curving horns Drop it and it is a cereal grain. 3. A three-letter word meaning a male sheep Drop it and it is a form of the verb to be. 4. A four-letter word meaning a large, four-legged, furry animal that lives in the woods Drop it and it is something on the side of your head. 5. A three-letter word meaning a farm animal Drop it and it means ouch. 6. A four-letter word meaning the kind of soil on a beach Drop it and it is a word in this sentence. 7. A five-letter word meaning something lichen grows on Drop it and it means a certain kind of sound. 8. A four-letter word meaning the opposite of cool Drop it and it is a body part. 9. A five-letter word meaning a place beyond the Earth’s atmosphere Drop it and it means the speed at which you move. 10. A five-letter word meaning the smallest amount Drop it and it is where the sun rises. Answers are on page 25. SPIGOT - http://www.spigotsciencemag.com 16 March/April 2009 Social Studies Connection Alaskan Wildlife Center Saves Animals for Study An Interview with Stephen Kroschel Interviewer: David Cochran G. Morgan Steve Kroschel holds a rescued linx. Last summer, on my trip to Alaska, I toured the Kroschel Films Wildlife Center in Haines, Alaska. It is filled with many species of North American wildlife. Meeting Stephen Kroschel and learning about the animals there and their stories was an unforgettable experience. It was great to get in touch with Steve again for this interview. I’m happy to share this adventure and photographs with our Spigot community. DC Kroschel Films Wildlife Center is a privately held collection of animals that have been rescued from the wild. It has been around for almost 40 years. Stephen Kroschel, the owner, was born and raised in Minnesota on a farm where he cared for wild animals. He has always liked wild creatures, and it makes him happy to see people enjoy the wildlife he protects. He has made a lifelong commitment to wildlife and education for the general public through his films and live presentations. DC: How does keeping animals in a center help them? Learn more about the Kroschel Films Wildlife Center at: http:// www.kroschelfilms.com/ SPIGOT - that wolverines need pure, vast wilderness areas to be healthy and survive. Humans need that clean, SK: Keeping animals at the center clear land to survive, too. helps them directly and indirectly. The Arctic National Wildlife First of all, many animals that are Refuge is one of the last here would have been destroyed by strongholds on Earth for the authorities because they were either wolverine. Its survival is orphaned or abandoned. Secondly, endangered by pollution, oil when others see these animals, they development, and other man-made then become interested, excited, threats. entertained, and moved to protect them and their natural DC: What does the loss of habitats environments. do to animal populations? For example, at the center, there are tame wolverines that we can SK: The loss of habitats can have handle. Wolverines are an bad effects on wild animals. It can extremely secretive and rare animal even eliminate entire wildlife of the north. They are very populations. Loss of habitats is a misunderstood. But here, people sign that humans are selfrealize what an enchanting animal destructing as well. It doesn’t species they are. Our visitors learn Continued on next page http://www.spigotsciencemag.com 17 March/April 2009 Social Studies Connection Now, on my return, many ponds have no frogs at all and the orchestra of nature in springtime no longer holds the same kind of concert. Why? Because of the loss of habitats. DC: We hear a lot about the warming of the climate. This is sometimes called global warming. How is this affecting animal populations in Alaska? SK: Global warming is affecting animal populations in Alaska in G. Mooney slow and subtle ways. As the tundra A porcupine snacks on some fresh gets warmer, the willow and spruce leaves. trees begin to grow there. This causes a loss of species such as seem as if we humans are lemmings. These animals are an threatened when we live important part of the food chain for comfortably and have lots other animals such as arctic foxes, of food, but we are. An example of weasels, wolverines, bears, and how man-made resources can kill snowy owls. habitats is electro-magnetic Polar bears are also having radiation. The radiation from problems. They have to work far electric lines can confuse migrating harder to find seals to eat because birds and kill or lower the immune the ice pack where they hunt is system of insects. Modern disappearing. agricultural methods, which take nutrients from the soil and pollute waterways, can also harm wildlife. Eventually, humans suffer from disease, climate change, urban sprawl, overpopulation, crime, and economic collapse when habitats are destroyed. DC: Have you noticed changes in the habitats of animals and plants? SK: Yes! For example, I have great memories of the many species of wildlife that I saw where I grew up in rural Minnesota some thirty years ago. I remember the unbroken forests, ponds, and swamps with bird life whose songs filled the air G. Mooney This playful wolverine is in the springtime. I remember the endangered and has survived swamps with a thundering because of the Kroschel Wildlife crescendo of singing frogs. Center. SPIGOT - http://www.spigotsciencemag.com 18 Because of warming, bark beetles are creating problems. They used to die off in winter, but now they survive the warmer winters and kill the trees of the forest. Animals south of the Arctic Circle need these forests to survive. We, of course, also need the forests. And everybody knows that trees produce oxygen for every living thing to live! DC: What can we do to protect our ecosystems? SK: What we all can do in our daily lives is learn to live sustainably. This means living so that we can help plants, animals, and humans and their habitats survive. We need to educate ourselves about how we can do that, and then set an example for others to follow. Here are some examples of little things we can do that can make a difference: Plant trees Grow our own food Use agricultural methods that do not use chemicals Avoid using plastics and other oil-based products. Use sustainable means of transportation and avoid using fossil fuel. Encourage recycling of aluminum, paper and plastics. Encourage family planning Amazingly, all the above protects the ocean environment, which is the biggest factor of all in ensuring oxygen production and neutralization of organic waste. The ocean holds the keys to the weather and climate. DC: Do you have any other things we should think about? It's not a bad idea to be nice to Mother Nature! Without her, none of us would be here today. :-) March/April 2009 Social Studies Connection A Potpourri of Pictures from the Kroschel Films Wildlife Center G. Mooney Mario, Steve Kroschel’s assistant, leads a rescued wolf to greet visitors. D. Cochran Mario hold s a hawk that is ready to take off. G. Mooney Garrett Kroschel, Steve’s son, holds an adult female pine marten that he has raised at the Wildlife Center. SPIGOT - http://www.spigotsciencemag.com 19 G. Morgan This grizzly bear cub was rescued after its mother died in the wild. March/April 2009 Social Studies Connection Ellen Swallow Richards An Early Ecologist by Susan Macdougall Wikipedia Commons Ellen Swallow Richards The word ecology was first used in Germany to describe the household of nature. Mrs. Richards applied it to humans and their environment. SPIGOT - Ellen Henrietta Swallow Richards (1842 –1911) accomplished amazing things in her lifetime. She believed that a clean environment was very important in our lives. She created the word ―euthenics.‖ This means the improvement of the environment inside and outside the home. In 1892, in a speech to a group of scientists, Mrs. Richards discussed ecology as the relationship of organisms to their environment. With this, she began the home ecology movement which became known as home economics. It showed the importance of good nutrition, proper clothing, physical fitness, sanitation, and home management. In the late 1800s few women worked, and she wanted women to know the importance of having a good environment in their homes. Ellen Swallow (her maiden name) became the first woman admitted to a scientific school. She was accepted as a special student to the Massachusetts Institute of Technology (MIT). As a student, she studied thousands of water samples from streams throughout Massachusetts. This became one of MIT’s most important projects. She also did pollution research and told people about the need for sewage treatment plants. She created a Women’s Laboratory at MIT but wasn’t paid for her work. She taught courses in chemistry, mineralogy, and biology. She was later given a paid faculty position. http://www.spigotsciencemag.com 20 Mrs. Richards wrote the first health-food cookbook and was very active in public health issues. She organized the first school lunch programs to be sure children were well fed. She set up model kitchens to teach working class families how to eat well and inexpensively. She showed one of these sample kitchens at the World's Columbian Expo in Chicago in 1893. She also wrote many books. Ellen Swallow Richards believed in education and opportunities for women throughout her life. She was a trail-blazer for women in helping people in the late 1800s learn about the importance of keeping a healthy environment. Activities 1. Look at the article Scientists Are People Too on the next page. Pick one of these scientists to learn more about. Using the Internet or books, list at least 10 facts about the person you choose. Write a story or do a presentation to explain their importance to others. 2. Learn more about Ellen Swallow Richards and other important women at: http:// www.distinguishedwomen.com/ biographies/richards-es.html. Do a creative project to show the importance of Mrs. Richards or another woman at this site. Express your ideas through writing, painting, drawing, poetry, music, or video. March/April 2009 Social Studies Connection Scientists Are People Too Timeline of Famous Ecologists The word ―ecology‖ was first used just a little over 100 years ago. Back then, botanists (scientists who study plant life) mainly described and classified plant life in the environment. However, Dr. Eugenius Warming (1841 – 1924), a Danish botanist, in his book Plantesamfund, completely changed the study of botany. Writing about communities of plants, he invented the field of plant ecology. Here are six scientists who have added their findings to the growing science of the ecosystem. 1913 Henry Cowles (1869 – 1939) is considered the first American ecologist. Always carrying his notebook and camera, he carefully observed the grasses, flowers, and trees around Lake Michigan. He noted the different kinds of soil, changes in climate, weather, and lengths of time for vegetation to germinate and grow. In his published papers, Cowles noted patterns of change in the natural plant environment. 1927 Charles Elton (1900 – 1991), 1973 a British biologist, also held a degree in zoology. He was one of the first to study animals in their habitats. While observing the relationship between living creatures and their natural environment, he discovered what he called the food chain. Food for all animals starts with plants and moves up through lower animal life to humans. The species at the bottom of the food chain is always greater in number than the species at the top. He called this the pyramid of numbers. 1935 Arthur Tansley (1871 – 1955), a British botanist and ecologist, introduced the concept “ecosystem” as a basic unit of nature. Before his work, scientists were studying individual species. Tansley’s work focused on habitats where the environment as a whole, with both living and non-living elements, affected the life of all within. George Evelyn Hutchinson 1916 Frederick Clements (1874 – 1957 (1903 – 1991), an English born 1945) made careful, detailed observations of the plant growth in grasslands as he drove his mule train across Nebraska. He found changes in the land brought on by nature (tornadoes and fires), by humans (cart tracks and plows), and by animals (herds of cattle). In these bare spots, new plants grew, died, and were replaced by other kinds of vegetation. He called this the succession of plants. SPIGOT - American zoologist developed the theory of the ecological niche. This is a place that meets the needs for a species to be able to tolerate the physical environment, get energy and nutrients, and avoid predators. These are all measurable qualities. This is also a way to compare niches of several species. http://www.spigotsciencemag.com 21 Bob May ( 1936), an Australian physicist, noted during the 1970s that acid rain was harming forest and lakes. Overfishing was emptying our lakes. May used mathematical tools to make ecological forecasts about natural resources. Using models to predict the future, scientists can now plan how to maintain forests, lakes, and soils to sustain life and avoid extinction. Activity 1. Number these developments in the order in which they happened: ___began using models to plan for future protection of the environment. ___by studying communities of plants, he basically invented the study of ecology. ___found in the relationship between plants and animals in the environment there is a food chain. ___elements in the ecological niche are labeled and measured. ___patterns of change were observed in the vegetation of plant communities. ___‖ecosystem‖ is recognized as the basic unit in nature. ___in many bare spots on the land a succession of plants takes place. 2. Make a timeline showing the development of the study of ecosystems in the environment from the ―communities of plants‖ to the ―models that predict the future.‖ March/April 2009 Health Connection Our Body, Our Ecosystem Our body is our ecosystem. Its many parts interact with the environment so that we can live healthy, active lives. The human body reacts to what we put in it just as a pond might react if a frog jumped into it. If the pond has a lily pad for the frog to sit on, and some dragonflies for the frog to eat, the pond is in balance. It works well. If, however, it has pollutants like oil in it, the pond will not be in balance and the frog, lily pad, and the dragonfly will all eventually die. Just like the pond, if we put things in our bodies that are changed into energy and help us move and think better, our system will be in balance. If, however, we put toxins, or poisons, in our body, we will unbalance our ecosystem. Toxins that upset our ecosystem include drugs, alcohol, and smoke from cigarettes. These are foreign to our bodies and interfere with its normal process of energy conversion. When smoke goes into our lungs, the impurities in the smoke get trapped there. We have trouble breathing and adding oxygen to our circulatory system. Drugs and alcohol cause our metabolism, the rate at which we burn calories, to act unnaturally. Alcohol slows metabolism down, while some drugs rev it up temporarily. This upsets our natural process of converting food to energy. Our body then can experience weight gain, loss of energy, or even disease. Toxic substances can also affect our movement and thinking. People who have too many drugs or alcohol in their system become impaired. They can’t think or act in a normal way. They sometimes act dangerously and can even hurt themselves or others. Our human ecosystem isn’t just affected by what we eat, smoke, or drink. It is also affected by how we think. Our brain controls how we think and behave. If we get upset and feel stressed, we can get sick or SPIGOT - have less energy. We can even become very unhappy. If we are thinking and feeling well, we have a lot of good energy. Ecosystems work best when all the parts support each other. That’s also important for our body ecosystem. It’s important to keep all our systems in balance. If we eat healthy foods, exercise, avoid toxins and germs, and keep in a happy frame of mind, our ecosystem will be in balance. Staying physically healthy and mentally happy helps us make the most of our lives. Activities 1. Make a list of all the foods you eat for three days. Decide how good these foods are for you. Do they give you energy and help you keep active or do they have too much sugar, fat, or salt in them? Decide whether you should change what you eat to keep your ecosystem in balance. 2. Make a poster or slide show about how our bodies are like an ecosystem. 3. Go to http://kidshealth.org/kid/stay_healthy/fit/ fit_kid.html. Read the suggestions for keeping your body healthy. Use the main points to do a survey of at least 10 people. Which of these suggestions do most of the 10 people follow? Which ones do they follow least? What do you think these results show us? Discuss this with others. . PONDER What are at least three things you do to keep your human ecosystem physically healthy, mentally happy, and in balance? http://www.spigotsciencemag.com 22 March/April 2009 Arts Connection The Peaceable Kingdom The Peaceable Kingdom, Edward Hicks (1780 -1849) National Gallery of Art, Washington, DC Edward Hicks was a famous American artist who painted in the nineteenth century. He liked to paint animals, both wild and domestic, from several different ecosystems together in one picture. Study the picture and discuss these questions: 1. Which biomes/ecosystems are represented by these animals from The Peaceable Kingdom? lion bear bull tiger lamb goat cow wolf ram leopard humans panther cougar 2. What do you think the Native Americans and the Colonists are doing in the left side of the painting? Why? 3. What do you think the meaning of this picture is? Why? 4. Could this picture happen in nature? Why? SPIGOT - http://www.spigotsciencemag.com 23 March/April 2009 Arts Connection Sing About Ecological Niches Over in the Meadow, written in 1800 by Olive A. Wadsworth, is a song that is fun to sing and act out. It’s all about a habitat—the meadow—and the different niches where animals live. Little toads in the sand are learning to wink and blink. Little fish in the stream are learning to swim. Little bluebirds in a tree are learning to sing. Little Over in the meadow, muskrats in the reeds are learning In the reeds on the shore to dive. And so on. Lived an old mother muskrat And her little ratties four Listen to it at: "Dive!" said the mother; http://kids.niehs.nih.gov/lyrics/ "We dive!" said the four overmeadow.htm So they dived and they burrowed In the reeds on the shore Over in the Meadow Over in the meadow, In the sand in the sun Lived an old mother toadie And her little toadie one "Wink!" said the mother; "I wink!" said the one, So they winked and they blinked In the sand in the sun Over in the meadow, Where the stream runs blue Lived an old mother fish And her little fishes two "Swim!" said the mother; "We swim!" said the two, So they swam and they leaped Where the stream runs blue Over in the meadow, In a hole in a tree Lived an old mother bluebird And her little birdies three "Sing!" said the mother; "We sing!" said the three So they sang and were glad In a hole in the tree SPIGOT - Over in the meadow, In a snug beehive Lived a mother honey bee And her little bees five "Buzz!" said the mother; "We buzz!" said the five So they buzzed and they hummed In the snug beehive Over in the meadow, In a nest built of sticks Lived a black mother crow And her little crows six "Caw!" said the mother; "We caw!" said the six So they cawed and they called In their nest built of sticks Over in the meadow, Where the grass is so even Lived a gay mother cricket And her little crickets seven "Chirp!" said the mother; http://www.spigotsciencemag.com 24 "We chirp!" said the seven So they chirped cheery notes In the grass soft and even Over in the meadow, By the old mossy gate Lived a brown mother lizard And her little lizards eight "Bask!" said the mother; "We bask!" said the eight So they basked in the sun On the old mossy gate Over in the meadow, Where the quiet pools shine Lived a green mother frog And her little froggies nine "Croak!" said the mother; "We croak!" said the nine So they croaked and they splashed Where the quiet pools shine Over in the meadow, In a sly little den Lived a gray mother spider And her little spiders ten "Spin!" said the mother; "We spin!" said the ten So they spun lacy webs In their sly little den Activities 1. With a group, learn a verse. Make scenery to show your animal and its niche. Practice your performance, then present it with all groups together. 2. Make up a new verse. 3. Illustrate each niche. March/April 2009 Books Ecosystems Book Reviews Dr. Patricia Richwine Common Ground: The Water, Earth, and Air We Share by Molly Bang, 1997, Blue Sky Press/ Scholastic. Sharing the air we breathe, the water we use, and the Earth where we live seems so simple. At least it was before so many of us lived on the planet. Now we have serious choices to make if we are going to preserve our natural resources for generations to come. Common Ground ends with a common question, ―…what will stop us from destroying our whole world?‖ One Well: The Story of Water on Earth by Rochelle Strauss, 2007, Kids Can Press. It isn’t so hard to imagine one global well because all the water on Earth is connected as if from only one source. Where is all this water? How is it used, misused, recycled, and conserved? Why do SPIGOT - we need water? How do plants and The Dictionary of the Environment animals use water? Which and Its Biomes by Chris Myers, countries use the most water? And 2001, Franklin Watts. finally, what can you do to preserve The environmental regions of and protect the Earth’s water? the Earth, or biomes, are unique and also connected. In more than 300 entries from Acid Rain to Zoos, read about your own biome as well as many far-away places and the plants and animals that inhabit them. Discover how you live and where you live are diverse yet linked to species and habitats around the world. World of Wonder: The Food Chain by Frank Staub, 2004, Creative Education. Adaptation by Alvin Silverstein, Our bodies, like those of other Virginia Silverstein, & Laura animals, don’t make food. Most of Silverstein Nunn, 2008, Twentyus are omnivores because we eat First Century Books. both plants and animals. How many other omnivores can you How do people survive in so many different habitats? We adapt name? What is your favorite to the conditions. Our brains give animal food? What is your favorite plant food? Try to draw a food us an advantage over other living things. But plants and animals also chain that leads from those foods to you. adapt in many ways. Some, like deer, can run fast. Some, like These books are algae, can live underwater. And some, like tigers, have sharp fangs. available through Learn how living things adapt to Amazon at our seasons, to day and night, and to web site. extreme surroundings. What do you do to adapt to your changing environment? Answers for: Omnivore Match, p.15 Herbivores: grasshoppers, mice, rabbits, deer, beaver, moose, cows, sheep, goats, groundhogs Carnivores: fox, frog, snake, hawk, spider, lion, tiger, cats, penguins, alligators, jellyfish, dolphins Answers to Drop It, p.16 1. Lion- ion 2.Goat- oat 3. Ram- am 4. Bear- ear 5. Cow- ow 6. Sand-and 7. Stone- tone 8. Warm- arm 9. Space- pace 10. Least- east Omnivores: bears, turtles, monkeys, squirrels, pigs, crows, humans, raccoons, chimpanzees, chickens http://www.spigotsciencemag.com 25 March/April 2009 Books Food Chains by Theresa Greenaway, 2001, Steck-Vaughn. Have you ever played the game Predator & Prey? If so, you know how a food chain works. All living things need food. Herbivores eat only plants. Carnivores eat only other animals. Think about the pets you and your classmates have. Are they herbivores, carnivores, or are they omnivores who eat both plants and animals like most humans do? Many food chains are connected to form food webs. You can play the food web game in this book. The Most Beautiful Roof in the World: Exploring the Rainforest Canopy by Kathryn Lasky, 1997, Gulliver Green. Once a Wolf: How Wildlife Biologists Fought to Bring Back the Gray Wolf by Stephen R. Swinburne, 1999, Houghton Mifflin. Go along with scientist Meg Lowman as she studies rainforests all over the world. Imagine being one of her two sons and learning to climb to the rainforest canopy to explore with your mother. Don’t touch the tarantulas and watch out for deadly snakes! Did wolves get a bad name from Little Red Riding Hood and The Three Little Pigs? Wolves were once killed and their habitats destroyed until they became an endangered species. As biologists realized the importance of these predators, wolves have been reintroduced in places such as An Island Scrapbook: Dawn to Idaho, New York, and Yellowstone Dusk on a Barrier Island by National Park. Virginia Wright-Frierson, 1998, Simon & Schuster. One Good Apple: Growing Our Food for the Sake of the Earth by Catherine Paladino, 1999, Houghton Mifflin. Are you eating harmful foods? You probably don’t think so. But consider the pesticides and chemicals that are used to grow and produce our food. Now think about what those poisons do to us when we eat them. Organic farmers don’t use pesticides and chemicals. Find out what you can do to help grow organic food. The Wonders of Biodiversity by Roy A. Gallant, 2003, Benchmark Books. Learning about biodiversity is fascinating but can also be frightening. According to this author, extinction caused by biodiversity loss is more serious than either global warming or pollution. Although the number of animal and plant species in the world is unknown, their rate of extinction appears to be increasing. What happens to the ecosystems when plants and animals become extinct? Drawings and field notes help bring the inhabitants of this barrier island to life. Learn about insects, fish, birds, and other animals that inhabit the marshes and ocean. See how you might make a scrapbook about your own vacation trip or about your own backyard. Coming Soon in Spigot Changing Earth—May 2009 Telescope 400th Anniversary— September 2009 Design—November 2009 Cells—January 2010 SPIGOT - http://www.spigotsciencemag.com 26 March/April 2009 SPIGOT - http://www.spigotsciencemag.com 27 March/April 2009
© Copyright 2024