Natural Selection

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Across
  1. 3. struggle to get necessities
  2. 4. When two things mate over and over again
  3. 6. a desired trait of an individual
  4. 10. Make things better adapted to environment
Down
  1. 1. adapted to the environment to make the same kind
  2. 2. All the ____ would survive it would be overpopulated
  3. 5. Darwin performed works of naturalists and _______
  4. 7. natural process by which something takes place
  5. 8. Darwin bred himself
  6. 9. Wipe out most of the local population of fish