Across
- 1. slow changes over time
- 8. all individuals of a species in an area
- 9. remnants of organs or structures from ancestors
- 11. ability to survive and produce more offspring
- 12. difference in physical traits
- 13. traces of an organism that existed in the past
- 14. biological change differing from ancestors
Down
- 2. geologic process that are uniform
- 3. organism to better survive in its environment
- 4. study of the distribution of organisms
- 5. similar organisms -reproduce fertile offspring
- 6. theory of natural selection
- 7. floods and volcanic eruptions
- 10. ability of a trait to be passed down