biology

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Across
  1. 5. adaption
  2. 7. competition
  3. 8. natural selection
  4. 9. gene flow
Down
  1. 1. fossils
  2. 2. gradualism
  3. 3. genetic drift
  4. 4. homology
  5. 5. artificial selection
  6. 6. punctuated Equilibrium