Across
- 2. To pollute
- 7. Wind
- 8. To safeguard
- 9. Ecologist
- 10. Treatment
- 12. Deforestation
- 15. Nuclear
- 16. Waste
- 19. To recycle
- 20. Waste
Down
- 1. Planet
- 3. Trash can
- 4. Solar panels
- 5. Woods
- 6. To destruct
- 11. Harmless
- 13. Species
- 14. Oil spill
- 17. Energy
- 18. Forest
