Chap 15 vocab

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Across
  1. 5. Mechanism for descent with modification.
  2. 7. each living thing descended from other species.
  3. 8. fittest survive.
  4. 9. The remains or traces of an organism that died long ago.
  5. 10. new types of organisms from preexisting types of organisms.
  6. 11. measure an individual's contribution to the next generation.
  7. 12. resemble miniatuare legs, tails, and other things.
Down
  1. 1. A trait that makes an individual successful in its environment.
  2. 2. compitition.
  3. 3. Anatomical structures occur in different species.
  4. 4. choosing to breed things together.
  5. 6. everything came from a comon ancestry.