Change Over Time Review

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Across
  1. 3. Evolution holds the idea that all animals at one time had a common __________
  2. 4. Type of evidence for evolution; uses homologous structures to defend that species have a common ancestor
  3. 6. In ________________ selection, individuals that are better adapted to their environment are more likely to survive and reproduce
  4. 8. Darwin was this type of scientist
  5. 10. Similar structures in different animals that come from a common ancestor
  6. 13. Type of evidence for evolution; scientists look at the DNA of organisms to see if they have a common ancestor
  7. 15. Type of evidence for evolution; scientists look at the embryos of different species to compare them
  8. 16. Type of evidence for evolution; scientists use this to infer the structures of ancient organisms
Down
  1. 1. Rate of evolution - short periods of rapid change, afterwards there is little change
  2. 2. Small changes that add up to major changes over a long period of time
  3. 5. The islands that Darwin studied on
  4. 7. A trait that allows an organism to survive; they will pass this to future offspring
  5. 9. The variety of life in a given area
  6. 11. In ________________ selection, only organisms with desired characteristics are bred
  7. 12. Animals that can mate and have fertile offspring
  8. 14. The change in organisms over time