Across
- 4. study of fossils
- 5. characteristics in related species can have underlying similarity even though functions may differ
- 6. similar anatomy from common ancestors
- 7. found at a certain geographic location and nowhere else
- 8. exist within a population.
- 10. remains or traces of organisms from past
Down
- 1. geographic distribution of a species
- 2. similar structures, function in similar environments
- 3. a change in species over time
- 9. forms A fossil that shows an intermediate state between an ancestral trait and that of its later descendants