Evolution Tic-Tac-Toe Crossword

123456789101112131415
Across
  1. 4. Only the fittest of a species will reproduce; survival of the fittest
  2. 6. Darwin's book on Natural Selection
  3. 10. The ability to survive and reproduce
  4. 11. Preserved remains of a long-dead organism
  5. 12. Two scientists who theorized that the earth took millions of years to form (NameANDName)
  6. 14. The animals Darwin studied on the Galapagos Islands
  7. 15. Same Structure, different function
Down
  1. 1. Organs which no longer serve a purpose
  2. 2. A species dies out completely
  3. 3. Species change over time and can give rise to new species
  4. 5. Manmade; Humans decide which plant or animal breeds
  5. 7. Species which two or more different species have in common
  6. 8. Differences and variety in a species
  7. 9. Change in DNA
  8. 13. Scientist who proposed the theory of inheritance of acquired traits