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Stack #4413027
| Question | Answer |
|---|---|
| Survival of the fittest: | Organisms with favorable variations reproduce more successfully than organisms with less favorable variations. |
| Variation | Any difference between individuals of the same species (usually caused by genes) |
| Theory of Evolution | Created by Charles Darwin, the idea that species gradually changed over many generations and became better adapted to their new environment. |
| Species: | A group of similar organisms that can mate with each other and produce fertile offspring |
| Adaptation | : a trait that helps an organism survive and reproduce. |
| Scientific Theory | statements or models that have been tested and confirmed many times. Theories have some important characteristics |
| Fossils | The preserved remains of organisms that lived in the past. |
| Preserved remains | some organisms are preserved in substances other than sediments (ex: woolly mammoths in ice, insects in amber) |
| Branching tree diagrams | shows how scientists think that different groups of organisms are related. |
| The Geologic Time Scale: | the calendar of Earth’s history based on information from the fossil record |
| Relative dating | used to determine which of two fossils is older |
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