Across
- 3. jungle/forest
- 7. to improve
- 10. pollution
- 11. to increase
- 14. to drown
- 17. hill
- 18. to fight
- 20. war
Down
- 1. peace
- 2. manner/way
- 4. river
- 5. the Earth
- 6. chemicals
- 8. to save
- 9. heat
- 12. to turn off
- 13. forest
- 15. to turn on
- 16. cans
- 19. the world
