Summarize the basic needs of a variety of different animals (including air, water, and food) for energy and growth.
Summarize the needs of living organisms for energy and growth.
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Explain how environmental conditions determine how well plants survive and grow.
Infer the effects that may result from the interconnected relationship of plants and animals to their ecosystem.
Classify the organisms within an ecosystem according to the function they serve: producers, consumers, or decomposers (biotic factors).
Compare the characteristics of several common ecosystems, including estuaries and salt marshes, oceans, lakes and ponds, forests, and grasslands.
Explain how the basic properties (texture and capacity to hold water) and components (sand, clay and humus) of soil determine the ability of soil to support the growth and survival of many plants.