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13 Cards in this Set
- Front
- Back
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natural selection
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A process by which characteristics that make an individual better suited to its environment become more common in a species.
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adaptation
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A behavior or physical characteristic that allows an organism to live sucessfully in its environment.
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niche
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The role of an organism in its habitat, or how it makes its living.
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competition
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The struggle between organisms to survive as they attempt to use the same limited resource.
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predation
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An interaction in which one organism kills another for food.
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predator
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The organism that does the killing in a predation interaction.
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prey
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An organism that is killed and eaten by another organism.
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symbiosis
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A close relationship between two species that benifits at least one of the species.
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mutualism
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A close relationship between two species in which both species benifit.
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commensalism
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A relationship between two species in which one benifits and the other is neither helped or harmed.
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parasitism
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A relationship in which one organism lives on or in a host and harms it.
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parasite
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The organism that benifits by living on or in a parasitism interaction.
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host
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The organism that a parasite lives in or on in a parasitism interaction.
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