Ecosystems and Environments Organisms and Environments 1 2 The greater a habitat’s biodiversity, the greater will be that habitat’s - A sustainability over time with varying conditions. B consumption of energy in the form of sunlight. C temperature ranges across the seasons. D distance to the nearest water source. Over time, a shallow pond fills with plants, such as duckweed and cattails. These plants - A will die off quickly in the shallow water. B support ecological succession from pond to marshland. C will grow into larger trees as they mature. D eventually will dry out and create a fire hazard. 1 Ecosystems and Environments Organisms and Environments 3 Why does biodiversity contribute to a habitat’s sustainability? 4 A The more plants and animals in a habitat, the greater the biomass, which is how habitats store energy. B The greater the number of species, the more competition there is for food between predators, which sustains their populations. C Changing conditions that harm one species leave other species to survive and perhaps even thrive. D Landforms change shape less frequently when there is a greater number of species using the land. A habitat that receives little or no precipitation will most likely be suitable for organisms that - A hibernate for long periods of time. B are covered in thick fur to keep warm. C spend most of the day in the sunlight. D store large quantities of water internally. 2 Ecosystems and Environments Organisms and Environments 5 Which of the following most likely supports the most sustainable ecosystem? A The habitat with the greater number of green plants B The habitat with the greatest variety of living things C The habitat with the warmest average temperature D The habitat with the greatest number of consumers 3