Across
- 8. Principle that states that living species are descended from ancient ones; descent with
- 10. When one species evolves into many; adaptive
- 11. When two unrelated organisms look alike(sharks & dolphins)
- 13. The name of the ship that Darwin traveled on
- 15. Required for new species to from
- 16. When two species evolve together
- 17. Natural selection is also know as the survival of the
- 19. When organisms disappear from the earth
- 21. Well-supported testable explanation
- 22. Pattern of evolution where a species is stable for a long time then rapidly changes; equilibrium
- 23. Preserved remains of ancient organisms
Down
- 1. Structures that are similar
- 2. The name of Darwin's book; the of species
- 3. Structures that have no current function
- 4. The study of the earth
- 5. Change over time
- 6. Island the Darwin visited
- 7. Formation of new species
- 9. Proposed the theory of evolution by natural selection
- 12. A characteristic that helps evolves into many; adaptive
- 14. Had different shaped beaks depending on the island they were from
- 18. Process by which evolution occurs; natural
- 20. Refers to the variety of livings things