Across
- 4. drought
- 7. planet
- 8. landslide
- 9. smog
- 11. to protect
- 12. deforestation
- 14. greenhouse effect
- 17. earthquake
Down
- 1. ozone layer
- 2. environment
- 3. to value
- 5. natural resource
- 6. to destroy
- 10. biodiversity
- 13. soil
- 15. flood
- 16. contamination