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| the study of interactions that take place between organisms and their environment. (air currects, temperature, moisture, light, and soil. |
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| the portion of Earth that supports living things. (extends from high in the atmosphere to the bottom of the oceans) |
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| nonliving parts of an organism's enviornment. |
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| all the living things in an enviornment. (animals, plants) |
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| group of organisms, all of the same species, which interbreed and live in the same area at the same time. |
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| made up of interacting populations in a certain area at a certain time. |
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| made up of interacting populations in a biological community and the community's abiotic factors. |
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| place where an organism lives out its life. |
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| all strategies and adaptations a species uses in its environment- how it meets its specific needs for food and shelter, how it survives. |
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| relationship in which both species benifit |
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| symbiotic relationship in which one species benefits and the other species is not harmed or benifitted |
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| symbiotic relationship in which a member of one species derives benefit at the expense of another species. |
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| an organism that cannot make its own food |
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| break down the complex compouds of dead and decaying plants and animals into simpler molecules. |
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| simple model that shows how matter and energy move through an ecosystem. |
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| shows all possible feeding relationships at each trophic level in a community. |
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