Natural Selection

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Across
  1. 1. blending into the environment
  2. 4. how long an organism is able to survive and reproduce
  3. 5. each bird developed different shaped beaks
  4. 7. an organisms ability to adapt to its environment over time
  5. 8. physical traits
  6. 9. the passing of genetic material
Down
  1. 1. studied different beak types
  2. 2. genetic traits
  3. 3. organisms most desirable traits survive; those who struggle are unfit
  4. 6. Darwin studied finches because of their different