Darwin and Natural Selection

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Across
  1. 3. differences in organisms in a population
  2. 7. more offspring than can survive
  3. 9. remains of dead animals
  4. 10. how animals have changed
  5. 13. where Darwin made many of his discoveries
Down
  1. 1. some individuals survive longer and reproduce more than others do
  2. 2. the bodily structures of different organisms
  3. 4. traits that help individuals survive
  4. 5. a character that is shared by a group of species because it is inherited from a common ancestor
  5. 6. the birds that Darwin studied
  6. 8. geologist that theorized the deeper you dig the older fossils get
  7. 11. thought of the false theory of inheritance of acquired traits
  8. 12. economist who realized that the human population grows exponentially