Evolution

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Across
  1. 1. had different shaped beaks depending on the island they were from
  2. 4. The name of Darwin's book - the ____of species
  3. 10. proposed the theory of evolution by natural selection
  4. 13. principle that states that living species are descended from ancient ones; descent with __________
  5. 14. the process by which evolution occurs - Natural ______
  6. 15. preserved remains of ancient organisms
  7. 16. when two species evolve together
Down
  1. 2. change over time
  2. 3. Structures that are similar
  3. 5. when organisms disappear from the Earth
  4. 6. A characteristic that helps an organism survive
  5. 7. Islands that Darwin visited
  6. 8. refers to the variety of living things
  7. 9. the name of the ship that Darwin travelled on
  8. 11. natural selection is also known as the survival of the _________
  9. 12. well-supported testable explanation