Natural Selection
Across
- 1. passed on from parents
- 3. father of evolution
- 4. what is called when oxygen falls to low
- 5. who Wrote an essay
- 8. natural process of something taking place
- 9. more offspring
- 10. process of of adaptation environment
Down
- 2. Darwin wrote what
- 6. what next generation will inherit
- 7. struggle to live