Biology Evolution Unit Vocabulary Project

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Across
  1. 2. The process of organisms with desired traits mating to have more of those traits in the new generation.
  2. 9. Individuals will survive because they are more fit in their environment.
  3. 12. The selection by nature where the most fit of a species will live and reproduce.
  4. 13. Where over the course of many generations species will change to help them survive better in their environment.
  5. 14. A structure that is reduced in size and has little or no function.
  6. 15. A theory that evolution happens slowly
Down
  1. 1. A technique scientists use to find out which fossil is older by looking at their rock layers.
  2. 3. Body parts that are structurally similar in related species and that provide evidence for a common ancestor
  3. 4. A technique used to find out which fossil is older based on what rock layer it was found in.
  4. 5. An idea that over time species evolve into different species.
  5. 6. The theory that species evolve during short periods of rapid change.
  6. 7. Differences in a species.
  7. 8. A diagram that shows how scientists think different groups of organisms are related.
  8. 10. When all of a species dies out.
  9. 11. The millions of fossils that scientists have collected, newer fossils are on top and older are on the bottom.