unit 6

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Across
  1. 2. naturalist who studied finches and turtles
  2. 3. multicellular organism
  3. 11. single species or small group of species evolve
  4. 13. used to arrange geological events
  5. 15. similar structure evolved from a common ancestor
  6. 16. organism dies out
  7. 18. calculates the age for geological material
  8. 19. inherited characteristic that increases an organisms chance of survival
  9. 20. remains or traces of life that have been preserved over time
Down
  1. 1. scientist who studies history of life through fossils
  2. 4. change over time
  3. 5. this pattern shows unrelated organisms come to resemble one another
  4. 6. idea that eukaryotic cells arose from prokaryotic cells.
  5. 7. diagram that shows relationships between species
  6. 8. where fossils are preserved
  7. 9. chooses most fit to survive
  8. 10. explanation for something
  9. 12. 2 species evolve in response to changes in each other over time
  10. 14. organism that has lost most of its original function
  11. 17. ability to survive and reproduce due to inherited adaptations