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| the interactions of living and nonliving factors in an area. |
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| all of one species in area, i.e. all of the rabbits in a field. |
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| all of the populations in an area |
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| a large ecosystem with its own kind of plants, animals and soil |
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| an organism that makes its own food through photosynthesis-most of these organisms are plants |
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| an organism that cannot make its own food, which eat only plants are herbivores, and those that eat only meat are carnivores, and those that eat both are omnivores |
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| an organism that breaks down dead plants and animals, i.e. bacteria and fungi |
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| the distribution of energy from one organism to another, it always begins with the sun |
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| shows how food chains are related in a food chain |
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| grassland, desert, taiga, tundra, decidiuous forest, and rain forest |
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