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| the nonliving parts of an organism's environment; air currents, temperature, moisture, light, and soil are examples. |
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| a community made up of interacting populations in a certain area at a certain time |
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| portion of Earth that supports life; extends from high in the atmosphere to the bottom of the oceans |
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| all the living organism that inhabit an environment |
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| symbiotic relationship in which one species benefits and the other species is neither harmed nor benefited |
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| scientific study of interactions between organisms and their environments |
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| interactions among populations in a community; the community's physical surroundings, or abiotic factors |
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| place where an organism lives out its life |
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| a symbiotic relationship in which both species benefit |
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| role or position a species has in its environment; includes all biotic and abiotic interactions as an animal meets its needs for survival and reproduction |
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| symbiotic relationship in which one organism benefits at the expense of another, usually another species |
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| group of organisms all of the same species, which interbreed and live in the same place at the same time |
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| permanent, close association between two or more organisms of different species |
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