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Evolutionary History
The study of species over milions/billions of years,.
| Term | Definition |
|---|---|
| Paleontologist | A scientist who studies fossils in order to understand the ancient history of life on Earth. |
| Species | A group of organisms of the same kind (in one or more populations) that do not reproduce with organisms from any other group |
| Body structure | A part of an organism (for example, one or more bones) |
| Shared structures | A body structure in two or more species that features the same parts (for example, the same bones) |
| Evolution | The process by which species adapt to environmental changes over a very long time |
| Descendant species | A more recent species that evolved from an ancestor population |
| Common ancestor population | An older population from which two or more newer species descended |
| Stability | When something stays mostly the same over time |
| Speciation | The process by which one population evolves into two or more different species |
| Related | Sharing a common ancestor population |