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| Biological change by which descendants come to differ from their ancestors. |
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| Group of organisms so similar to one another that they can reproduce and have fertile offspring. |
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| Traces of organisms that existed in the past. |
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| States that natural disasters such as floods and volcanic eruptions have happened often during Earth's long history. |
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| Observed in land forms resulting from slow changes over a long period of time. |
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| Proposes that present geologic processes are the key to the past. |
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| Difference between physical traits of an individual from other individuals in the group in which it belongs. |
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| Feature that allows an organism to better survive in its environment. |
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Definition
| Process by which humans change a species by breeding it for certain traits. |
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Definition
| Ability of a trait to be passed down from one generation to the next. |
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| Mechanism by which individuals that have inherited beneficial adaptations produce more offspring, on average than other individuals. |
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Definition
| All individuals of a species that live in a area. |
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Definition
| Measure of the ability to survive and produce more offspring relative to other members of the population in a given environment. |
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| Study of the distribution of organisms around the world. |
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Definition
| Features that are similar in structure but appear in different organisms and have different functions. |
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Definition
| Structures that perform a similar function, ex. birds and insects fly, but wings have bones, while insects have membranes. |
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Definition
| Remains of organs or structures that had a function in an early ancestor. |
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Definition
| Study of fossils or extinct organisms that continue to provide new information and support current hypotheses about how evolution occurs. |
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