Evidence for Evolution Crossword

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Across
  1. 4. natural selection
  2. 6. artificial selection
  3. 8. absolute dating
  4. 10. mutation
  5. 11. gene
  6. 12. relative dating
  7. 13. variation
Down
  1. 1. embryology
  2. 2. trait
  3. 3. vestigial structure
  4. 5. evolution
  5. 7. comparative anatomy
  6. 9. fossil
  7. 10. molecular clock