Across
- 2. Darwins ship name.
- 4. what would happnen if everyone survived
- 7. made the essay that helped Darwin understand natural selction
- 10. what two animals did he study
Down
- 1. Darwins book name
- 3. What animals did Darwin breed
- 5. how much faster did pigeons produce
- 6. a natural process by which something takes place
- 8. what can produce many offspring
- 9. one factor of natural selection