Natural Selection Vocab

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Across
  1. 1. Changes in DNA that can help or hurt organisms.
  2. 3. A group of similar organisms that can breed and produce fertile offspring.
  3. 6. Producing more offspring than will survive.
  4. 7. An organism's physical appearance.
  5. 8. Ability of an organism to survive and reproduce.
Down
  1. 2. A trait that is passed down and helps an animal survive and reproduce.
  2. 4. A difference between individuals of the same species.
  3. 5. An organism's genetic makeup.