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| the scientific study of interactions among organisms and their environments |
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| the portion of the earth that supports life |
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| the nonliving parts of an organism's environment |
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| all the living organisms that inhabit an environment |
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| a group of organisms of one species that interbreed and live in the same place at the same time |
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| a collection of interacting populations |
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| interactions among the populations in a community and the community's physical surroundings or abiotic factors |
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| the place where an organism lives out its life |
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| the role and position a species has in its environment - how it meets its needs for food, shelter, survival and reproduction |
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| a relationship in which there is a close and permanent association among organisms of different species; "living together" |
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| a relationship in which one species benefits and the other species is neither harmed nor benefited |
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| a relationship in which both species benefit |
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Definition
| a relationship in which one organism derives benefit at the expense of the other; one organism benefits and the other is harmed |
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