Across
- 6. changed behavior or phenotypic traits to survive
- 7. raid growth of algae
- 8. remains of organisms that show that hey have common ancestor
- 9. have the same function but not the same structure
- 10. remains of organisms that become part of rock, bone, plants...
- 11. the rate of certain traits doesn't change
- 13. excessive nutrients end up with algae growing
- 14. one of the genders selects the trait they wish to reproduce with
- 15. structures that were used by ancestors are no longer being used
Down
- 1. chance over time rather than sudden change
- 2. body parts that have a similar structure
- 3. changes in traits over time
- 4. having the same ancestor species
- 5. the ability to survive and reproduce
- 12. a measurement of how many kind of species in the area