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6Unit A / Ch. 3
Science Terms / Unit A / Chapter 3
| Term | Definition |
|---|---|
| adaptation | an inherited trait that helps a species survive in its environment |
| evolution | process that result in changes in the genetic makeup of a species over very long periods |
| natural selection | the idea that those organisms best adapted to their environment will be ones most likely to survive and reproduce |
| structural adaptation | adaptation that involves body parts or color |
| population | all the organisms of one species that live in a certain place |
| stimulus | a change in the environment of an organism that causes a response |
| response | a reaction of an organism to a change in the environment |
| physiological adaptation | adaptation that involves a body part's job of controlling a life process |
| behavioral adaptation | an action that aids survival |
| instinct | an inherited behavior |
| reflex | quick, automatic responses to a stimulus |