Lanyn Sisk- Unit 7 Choice Board

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Across
  1. 2. all living things derive from common ancestor
  2. 6. competition
  3. 11. inner germ layer
  4. 15. outer germ layer
  5. 16. diagram shows evolutionary relationships among group of organisms
  6. 17. ability to survive and reproduce in environment
  7. 19. a scientist who studies fossils
  8. 20. small group evolves
  9. 21. long stable time interrupted by rapid change
Down
  1. 1. mutations
  2. 3. He studied evolution and finches
  3. 4. two species evolve in response to each other
  4. 5. middle germ layer
  5. 7. when a species dies out
  6. 8. also called natural selection
  7. 9. a trait that increases fitness
  8. 10. selection also called survival of the fittest
  9. 12. formation of new species
  10. 13. structure inherited but lost purpose or use.
  11. 14. Earth's history divided into time frame.
  12. 18. change over time