Evolution

4. had different shaped beaks depending on the island they were from
9. refers to the variety of living things
10. selection Charles Darwin’s theory of evolution states that evolution happens by what?
11. when organisms disappear from the earth
13. when two species evolve together
14. radiation when a species splits into a number of new forms when a change in the environment makes new resources available or creates new environmental challenges.
15. the name of Darwin's book; the ___ of species
16. a characteristic that helps an organism survive
17. / the formation of new and distinct species in the course of evolution
20. is the process by which modern organisms have descended from ancient organisms

1. Beagle the name of the ship that Charles Darwin traveled on
2. type of evolution when the same adaptations evolve independently, under similar selection pressures
3. organs that serve no useful function in an organism
5. structures that are similar
6. principle that states that living species are descended from ancient ones; descended with __________
7. Darwin father of evolution
8. required for new species to form
12. a well-supported testable explanation of phenomena that have occurred in the natural world
18. study of the earth
19. Darwin collected the preserved remains of ancient organisms, called ____