Across
- 3. carbon
- 4. to contaminate
- 6. trash
- 8. erosion
- 11. to conserve
- 13. ecosystem
- 15. to donate
- 16. cardboard
- 18. extinct
- 20. to save
- 23. deforestation
- 24. to preserve
- 26. to waste
- 27. flood
Down
- 1. rechargeable
- 2. renewable
- 5. trees
- 6. bottle
- 7. to recycle
- 9. faucet
- 10. earth
- 12. to collect
- 14. to change
- 17. sustainability
- 19. to protect
- 21. birds
- 22. to combat/fight
- 25. forest