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1.3 Ecology
Term | Definition |
---|---|
niche | the role of an organism in its habitat |
symbiosis | a close relationship between two species in which at least one benefits |
prey | organism that is killed and eaten |
parasitism | a relationship in which one species lives on or in another organism and benefits and the other species is harmed |
predation | when one organism kills another for food |
natural selection | the process by which organisms that are better adapted to their environment survive and reproduce |
host | an organism that is harmed by another organism living on it or in it |
predator | organism that kills another for food |
competition | the struggle to survive over limited resources |
commensalism | a relationship in which one species benefits and the other is not affected |
parasitism | an organism that lives on or in another organism and harms it |
mutualism | a relationship in which both organisms benefit |
adaptations | behaviors or physical characteristics that make an organism better able to survive |