| A | B |
|---|
| extinct animal | a mammoth is an example |
| mutation | a change in a gene |
| fossils | insects preserved in tree sap are this |
| adaptation | inherited trait that helps surival |
| index fossils | used to help estimate age of fossils |
| radioactive dating | determines exact age of a fossil |
| evolution | Darwin's theory using natural selection |
| relative dating | estimates the age of a fossil |
| gene pool | scientists study evolution using this from a population |
| convergent evolution | members of different species have similar traits |
