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Definition
| the gradual change in a species over time |
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| a group of similar orgransims that can mate with each and produce fertile offspring |
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Definition
| a well-tested concept that explains a wide range of observations |
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Definition
| a trait that helps an organism survive and reproduce |
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Definition
| structures that are similar in form and functions |
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Definition
| the process by which individuals that are better adaptated to their environment are more likely to survive and reproduce than other members of the same species |
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Definition
| an inherited trait that makes one organsim different from another in the same species |
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Term
| "Survival of the Fittest" |
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Definition
| organisms that are best adapted to the environment survive |
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Definition
| a change in a gene or chromosome |
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Definition
| a British naturalist that travelled around the world for five years and recorded his observations of animals that he saw along the way. |
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| to provide more than the environment will bear |
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Definition
| active demand by two or more organisms for some environmental resource in short supply |
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Definition
| one theory that proposes that evolution occurs slowly but steadily |
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