vocab

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Across
  1. 3. evolution from pre-existing species
  2. 4. similar anatomical structures that do the same jobs
  3. 8. the study of the structures of organisms
  4. 9. Meteor and the dinosaurs
  5. 10. species arise from one common ancestor
  6. 11. structures with little or no function to the organism
  7. 15. the genes in an population
  8. 17. evolution that occurs primarily through short bursts of intense speciation
  9. 19. two species evolving to form a specialized relationship
  10. 21. the study of pre-historic populations
  11. 22. consisting of similar individuals capable of reproduction
  12. 23. death due to climate change
Down
  1. 1. unrelated species evolving similar structures
  2. 2. Peacocks mate like this
  3. 5. remains of plants or animals that contribute to paleontology
  4. 6. characteristics from common ancestry that serve different functions
  5. 7. the environment determines fitness
  6. 12. Migration
  7. 13. genes change randomly
  8. 14. evolution on a slow gradual scale
  9. 16. species within the same area
  10. 18. species changing over time
  11. 20. a trait that allows an organism to better survive