Natural selection

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Across
  1. 3. when an animal must change to survive in its environment
  2. 5. any change to genetic information
  3. 6. the three factors for evolution
  4. 7. the ship the father of evolution sailed on
Down
  1. 1. the thing the father of evolution did not understand
  2. 2. the aninimals the father of evolution studied
  3. 4. sailed around the world and the father of evolution