1. name of the ship Darwin sailed on Beagle
6. published "The Origin of Species" Darwin
7. trees that show how organisms are related phylogenetic
9. the earth is thought to be 4.5 ___ years old billion
10. the process by which new species are formed speciation
12. industrial melanism was seen in this insect moth
13. type of bird on the galapagos islands finch
16. when a species dies out, it becomes extinct
17. preserved remain of an organism that lived long ago fossil
18. "survival of the fittest", natural _selection
19. all the members of a species that live in the same place population
20. finches on the Galapagos had different shaped _beaks
2. theory that species change over time evolution
3. structures that have no use vestigial
4. a species from which two or more species diverged (2 words) common ancestor
5. scientist who studies fossils paleontologist
8. closest living relative to humans chimpanzee
11. a bat's wing is homologous to a human _arm
14. structures that share a common ancestry, similar in nature homologous
15. ambulocetus was an ancestor of this modern animal whale