Darwin's Discoveries

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Across
  1. 2. The name of the ship that Darwin sailed on
  2. 3. The town of England where Darwin landed upon his return
  3. 6. Only the best suited individuals will survive and live long enough to ____________.
  4. 8. The original purpose of the ship's crew was to make a _________ of the coastline of South America
  5. 9. A chain of islands off the coast of Ecuador that are home to uniquely diverse species
  6. 11. Individuals within a species have differences
  7. 13. In Chile, Darwin realized that the earth's surface can move because he felt an ______________.
  8. 15. Darwin set sail from this city in England in 1831
  9. 16. Darwin found that the beaks on these birds varied depending upon the food available on their island
  10. 17. The captain of the ship that Darwin sailed on
  11. 19. Darwin noticed that the short-necked tortoises were found on islands that had plants growing close to the _____________.
  12. 20. Darwin noticed that long-necked tortoises were found on islands that were dry and had lots of
Down
  1. 1. Darwin was astonished by this egg laying mammal that he found only in Australia
  2. 4. The first country in South America that Darwin visited
  3. 5. The gradual process of change over time, sometimes leading to creation of a new species
  4. 7. Darwin wondered why this large, flightless bird was found only in Australia
  5. 10. Remains of extinct species that Darwin realized were ancestors of today's animals
  6. 12. A species makes more offspring than will survive
  7. 14. Individuals in a species fight for resources such as food, shelter and mates
  8. 18. Darwin found a unique species of these lizards that could swim