Judith Palacios Hernandez 6TH Evolution

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Across
  1. 1. when two species involve together
  2. 4. pattern of evolution where a species is stable for a long time then rapidly changes ________ equilibrium
  3. 6. principle that states that living species are descended from ancient ones decent with
  4. 10. a characteristics that helps and organism survive
  5. 11. structures that have no current function
  6. 12. had different shaped shells depending on the island they were from
  7. 14. when organism c change over time
  8. 19. refers to the variety of living things
  9. 20. proposed the theory of evolution by natural selection
  10. 21. the name of the ship that Darwin traveled on
  11. 23. when organisms disappear from the earth
  12. 24. structures that are similar
  13. 25. process by which evolution occurs , natural
  14. 26. when one species evolves into many adaptive
Down
  1. 2. a living thing
  2. 3. formation of new species
  3. 5. preserved remains of ancient organisms
  4. 7. required for new species to form
  5. 8. islands that Darwin visited
  6. 9. the presence of differences in sequences of genes
  7. 13. the study of the earth
  8. 15. well supported testable explanation
  9. 16. when two unrelated organisms look alike (sharks, dolphins)
  10. 17. the name of Darwin's book the__________ of species
  11. 18. natural selection is also know as the survival of the
  12. 22. change over time