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evolutionary history
the study of species over million/billions of years
| Question | Answer |
|---|---|
| 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 on or more populations) that do not reproduce with organism form any other group |
| body structure | a part of an organism(for example, on or more bones) |
| shared structure | A body structure in two or more species that feature 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 |
| speciation | the process by which one population evolves into two or more different species |
| stability | when something stays mostly the same over time |