Biology

3. theory that a species would slowly evolve over time through favorable mutations
4. same bone structure, same function, no common ancestor
5. both extremes are favored
8. theory that life comes from other life
11. person who theorized that evolution is due to natural selection
13. when two species evolve in response to each other
14. average trait is favored
15. theory that evolution occurs over a lifetime and changes with use/disuse
17. same bone structure, different functions, shows common ancestor
19. hypothesis that early rain and lightning created simple organic compounds to create life
20. person who created the theory of acquired characteristics

1. show constant change in a species
2. period of no change followed by periods of rapid change
6. theory that life came from nothing
7. states that several key organelles of eukaryotes originated as symbiosis between organisms
9. one species can change over time to become two
10. one of the extreme traits is favored
12. adaptation that allows an animal to blend into its enviornment
16. our planet in its early years of volcanic activity
18. organ that is no longer in use