Darwin's theory of evolution

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Across
  1. 3. a theory of biological evolution created by Charles Darwin
  2. 5. An upgrade in a species
  3. 8. how many members of a species there are
  4. 12. knowledge known from birth.
  5. 13. to make another member of a species
  6. 16. dated
  7. 17. a group of a species made up of entirely offspring
  8. 18. the ability to stay alive
  9. 19. a feature that gets passed down generation to generation
  10. 20. an advancement that is hurtful to a species
  11. 23. to receive a trait from a parent
  12. 25. a member of a species created by two parents.
  13. 26. connected to in some way
  14. 28. heavily debated upon.
  15. 29. an action that a species can do
  16. 30. The family that monkeys, apes, and humans belong to
Down
  1. 1. the progression and advancement of a species
  2. 2. a member of a species who created offspring
  3. 4. The man who came up with the theory of evolution
  4. 6. an ancestor that two species share in common
  5. 7. The group that an organism belongs to
  6. 9. not natural
  7. 10. a way nature intended
  8. 11. to further advance
  9. 14. a living thing
  10. 15. a bird that Charles Darwin found to have adapted to their respective islands.
  11. 19. an organism with a hard shell to protect against predator with a decrease in speed
  12. 21. an advancement that is good for a species
  13. 22. The theory that the fittest of a group is the most likely to reproduce
  14. 24. a hypothesis
  15. 27. a change made that is beneficial to a species