Evolution

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Across
  1. 4. a type of effect from an event that reduces the population size
  2. 8. a feature that allows an organism to survive
  3. 9. group of organisms living together
  4. 10. structures that are remnants that lost their function
  5. 12. a type of effect when a small number of individuals becomes isolated and colonize a new area
  6. 14. preserved remains of an organism
  7. 17. a type of selection by man for breeding
  8. 18. a type of moth studied in England
  9. 19. measure of the ability of an organism to survive
  10. 20. differences among organisms
Down
  1. 1. large reptile studied by Darwin
  2. 2. the elimination of a species
  3. 3. a type of selection by nature
  4. 5. limited resources causes challenges for food
  5. 6. islands off of South America that Darwin studied
  6. 7. structures that share structural similarities
  7. 11. a group of organisms that can breed and produce fertile offspring
  8. 13. process of biological change
  9. 15. producing too many individuals
  10. 16. type of bird studied by Darwin