Evolution

12345678910111213141516171819
Across
  1. 2. Scientific name for humans
  2. 4. trait that improves ability to survive.
  3. 8. time between one stage of life and the next.
  4. 10. Earth is 4.6 _____ years old.
  5. 11. Well supported explanation tested and proven over time.
  6. 13. determining if something is older or younger than something.
  7. 15. individuals that are better adapted to their environment survive and reproduce
  8. 17. Breeding animals that have certain desired characteristics.
  9. 18. Primate that walked on two legs.
  10. 19. mammals with opposable thumbs.
Down
  1. 1. Time scale that divides Earth's natural history into parts.
  2. 3. Change over generations with new species arising.
  3. 5. The formation of new species as a result of evolution.
  4. 6. Developed Theory of Evolution by Natural Selection.
  5. 7. Remains of an organism preserved by geological processes.
  6. 9. A change in the sequence of DNA.
  7. 12. Genetically determined characteristic.
  8. 14. measuring the age of an object or event in years.
  9. 16. The appendix and wisdom teeth are examples.