Across
- 2. CHANGE OF GENEFIC COMPOSITION OVER TIME
- 3. :needs oxygen to survive
- 7. : 2 extremes survive
- 8. theory of natural selection
- 9. feed on others
- 10. only one extreme survive
Down
- 1. make their own food
- 3. doesn't need oxygen to survive
- 4. theory of catastrophism
- 5. theory of use and disuse
- 6. organisms with medium traits survive