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| The struggle between organisms to survive as they attempt to use the same limited resource. |
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| The organism that does the killing in a predation interaction. |
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| All the members of one species in a particular area. |
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| The community of organisms that live in a particular area along with their nonliving surroundings. |
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| All the different populations that live together in an area. |
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| A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce. |
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| A type of symbiosis in which both partners benefit from living together. |
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| The largest population that an area can support. |
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Definition
| A living part of an organism’s habitat. |
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Definition
| A nonliving part of an organism’s habitat. |
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Definition
| A relationship between two species in which one species benefits and the other is neither helped nor harmed. |
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Definition
| An environmental factor that causes a population to decrease. |
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Definition
| A trait that helps an organism survive and reproduce. |
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Definition
| The role of an organism in its habitat, or how it makes its living. |
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