Biology

3. adaptation that allows an animal to blend into its enviornment
4. theory that a species would slowly evolve over time through favorable mutations
6. one species can change over time to become two
7. our planet in its early years of volcanic activity
8. person who created the theory of acquired characteristics
10. same bone structure, different functions, shows common ancestor
12. theory that evolution occurs over a lifetime and changes with use/disuse
15. hypothesis that early rain and lightning created simple organic compounds to create life
16. person who theorized that evolution is due to natural selection
17. organ that is no longer in use
19. theory that life comes from other life
20. when two species evolve in response to each other

1. period of no change followed by periods of rapid change
2. show constant change in a species
5. theory that life came from nothing
9. average trait is favored
11. one of the extreme traits is favored
13. same bone structure, same function, no common ancestor
14. states that several key organelles of eukaryotes originated as symbiosis between organisms
18. both extremes are favored