Evolution

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