Across
- 3. remnants of organs and structures from an early ancestor.
- 4. a group of organisms
- 5. similar but appear different
- 7. the ability of a trait to be passes down from one generation to another
- 8. biological change
- 9. measure of ability to survive
- 11. feature that allows an organism to better survive in its environment
- 13. slow changes over a matter of time
- 14. individuals of a species that live in an area
- 15. natural disasters
Down
- 1. distribution of organisms around the world
- 2. traces of organisms who lived in the past
- 3. when species on one island look different than those on near by island
- 6. geological processes that shape Earth over time
- 10. the environment is a selective agent
- 11. humans act as a selective agent
- 12. perform similar but not similar in origin