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Chapter 1 Science
Lesson 3 Interactions Among Living Things
| Term | Definition |
|---|---|
| Natural Selection | anything naturally occurring in the environment that humans use |
| Adaptation | an inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment |
| Niche | how an organism makes its living and interacts with the biotic and abiotic factors in its habitat |
| Comptetion | the struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time |
| Predation | an interaction in which one organism kills another for food or nutrients |
| predator | the organism that does the killing in a predation interaction |
| Prey | an organism that is killed and eaten by another organism in a predation interaction |
| Symbiosis | any relationship in which two species live closely together and that benefits at least one of the species |
| Mutualism | a type of symbiosis in which both species benefit from living together |
| Commensalism | a type of symbiosis between two species in which one species benefits and the other species is neither helped nor harmed |
| Parasitism | a type of symbiosis in which one organism lives with, on, or in a host and harms it. |
| Parasite | the organism that benefits by living with, on, or in a host in a parasitism interaction |
| Host | an organism that a parasite lives with, in, or on, and provides a source of energy or a suitable environment for the parasite to live |
Created by:
dguilliams
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