Across
- 3. When related species become more different over time
- 6. A trait that helps an organism survive in it's environment
- 8. How well an organism survives and has offspring.
- 9. Traits gained during life that are not inherited
- 13. Body parts with similar origins but different functions
- 15. The study of embryos and early development
- 16. Layers of rock formed over time
- 17. When one species evolves into many different species
- 18. When humans choose which organism reproduce
- 20. When different species evolve similar traits independently
- 21. The by which organisms with helpful traits survive and reproduce more.
- 22. The study of where organisms live around the world
Down
- 1. A body part that has little or no use today
- 2. Body parts with similar functions but different origins
- 4. The process where speacies change over time?
- 5. the exact age of a rock, fossils, or object
- 7. A species with traits of both older and newer groups
- 10. The idea that sudden events shape Earth's history
- 11. A diagram showing evolutionary relationship between organisms
- 12. The change in living over time
- 14. The age of something compared to other things.
- 19. When two species evolve in response to each other