Evolution

2. selection the ability to survive and reproduce leading to changes
4. years how long was Charles Darwins voyage
6. structures of bone that look the same but have different fucntions
8. connected through_____
10. what group of people had been observing and using variations in organisms for a long time
11. variation in a population is____
12. the island where Darwin made his discovery
13. how long did it take for Darwin to publish his book
17. individual organisms ____ from one another
19. the struggle for environmental resources
20. where was Darwins book present at

1. must compete for this
3. English naturalist who discovered natural selection
5. the modification and changes of species over time
7. these have homologous structures for their bones
9. what did Darwin discover from the finches
14. traits we adapted but don't use any more
15. during the struggle for survival which organisms survive to pass on there genes
16. why was darwins theory a challenge idea at the time
18. the other naturalist that helped Darwin publish his book