Across
- 4. a reptile with a hard round shell
- 10. surrounding somebody/something
- 11. specific
- 12. Charles
- 13. to communicate with somebody
- 15. used in questions to ask somebody to be exact about one
- 18. the slow steady development
- 19. a specific group of animals
- 20. to change your behavior in order
Down
- 1. the natural world in which people, animals and plants live
- 2. a careful study of an object
- 3. learn
- 5. the ... island
- 6. a person who is travelling
- 7. a small bird with a short beak
- 8. dogs, birds, lions, etc.
- 9. a person who studies animals
- 14. planet humans live in
- 16. a piece of land
- 17. the land next to the sea