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