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| the study of how living things interact with one another and with their enviornment. |
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| the living parts of envioronment |
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| non living parts of enviornment |
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| any factor in the environment that limits the size of a population |
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| all the individuals of a single species that live in a specific area. |
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| a combination of all the different populations that live and interact in the same environment. |
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| all the living and non living things that interact in a specific area, a subdivision of the environment. |
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| an organism that produces its own food, the source of enegry for all other living things on Earth. |
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| all of earth's ecosystems with collectively the biologically in habited portions of earth including all of the water, land and air which organisms survive. |
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| organism that cannot make its own food, a consumer |
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| an organism that eats only plants |
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| heteroph that consumes both plants and animals. |
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| each step in a food chain or food web. |
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| the movement of energy through an ecosystem. |
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| total mass of living matter at each trophic level. |
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| a representation that identifies the specific feeding realtionships among organisms. |
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| a representation of many interconnected food chains that shows the feeding realtionships among producers, consumers and decomposer |
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| a digram showing how food energy moves through an ecoystem. |
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