Evolution

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Across
  1. 3. A trait that is passed on
  2. 4. Ability to have many offspring
  3. 6. Proposed uniformitarianism
  4. 10. is the difference in an expression of a trait.
  5. 11. Is the measure of the ability to survive
  6. 13. Organisms create offspring that are fertile.
  7. 14. Theory stating change is uniform
Down
  1. 1. Organisms that mate & reproduce fertile young.
  2. 2. is a feature allowing an organism to survive
  3. 5. selection Humans change species by breeding
  4. 7. A biological change within a population.
  5. 8. Traces of organisms that existed in the past
  6. 9. Proposed all natural selection.
  7. 12. Said environment caused organisms to change