Across
- 6. structures in anatomy that are there for what seems like no apparent reason, but at one time had a use.
- 7. preserved remains of ancient organisms
- 8. theory that layers of rock are evidence of ordinary natural processes, that occur repeatedly over a long period of time
- 9. Change in species characteristics over generations
- 11. outwardly similar but nonhomologous structures
- 12. internally similar structures
Down
- 1. the idea that the body of the organism are modified through the use/disuse of parts
- 2. process where organisms who are better adapted to their environment tend to survive and produce more offspring
- 3. the breeding of domestic plants and animals to produce specific desirable traits
- 4. where natural selection causes nonhomologous structures to resemble one another
- 5. group of individuals of the same species who interbreed.
- 10. the theory that a vast supply of species was initially created, but over time many were destroyed and fossilised