Evolution and Natural Selection study game

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Across
  1. 2. bacteria cannot become drug resistant
  2. 4. An explanation that is based on observation, experimentation, and reasoning.
  3. 5. The creator of the early atmosphere theory
  4. 9. structures left over from an ancestor
  5. 13. given or passed antibodies
  6. 14. Scientist who discovered evolution
  7. 15. change in allele frequency due to a chance event
  8. 16. are mutations inheritable?
  9. 17. your own body makes antibodies
  10. 19. process by which modern organisms have descended from ancient organisms.
  11. 21. Most important islands for Darwin's hypothesis
Down
  1. 1. Type of bacterium that uses oxygen
  2. 3. when farmers selectively breed it is called:
  3. 6. Eukaryotes evolved from:
  4. 7. example of a vestigial structure
  5. 8. Variations will be passed onto:
  6. 10. dated using half lives and radioactive methods
  7. 11. "Descent with _____"
  8. 12. active immunity can be achieved through vaccination
  9. 18. competition happens when species have to fight for _________
  10. 20. Photosynthesis created what atmospheric layer