Evolution

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Across
  1. 2. Big changes over time to survive
  2. 4. separated by physical barriers like mountains
  3. 6. Different everything but lives in the same environment
  4. 7. favors neither extremes of life
  5. 8. rapid improvement of genetics to survive
  6. 9. Random genetic changes in a population
  7. 11. learned over time
  8. 15. passed down from one to the next
  9. 18. Has no purpose that we know of
  10. 19. unrelated groups with similar traits
  11. 20. Favors only one extreme of life
  12. 21. Favors the extreme of both sides of life
Down
  1. 1. Same body parts different functions different environment
  2. 3. only the fittest survive
  3. 5. Cannot breed with each other, can't make fertile offspring
  4. 10. small changes over time to survive
  5. 12. over time the only thing connecting two animals is a common ancestor
  6. 13. Related species become less alike like an elephant and Human
  7. 14. Theory of change in animals supported by science
  8. 16. Starts with gills, All vertebrate animals look the same
  9. 17. Father of evolution