Across
- 2. the babies of a mother
- 4. a process that animals are better adapted
- 6. struggle among other living things
- 7. wrote a essay on natural selection
- 10. only individuals with desired trait
Down
- 1. the book darwin wrote
- 3. the islands darwin explored
- 5. ship that darwin rode
- 8. things that help animals survive
- 9. natural process by which something takes place