Across
- 1. to cut down trees
- 3. landfill
- 8. reusable
- 10. waste
- 11. chemistry
- 12. wild plant life
- 14. cup/mug
- 16. bee
- 17. renewable
- 18. wind turbine
- 21. ozone layer
Down
- 2. hill
- 4. glass
- 5. chemical
- 6. wild life
- 7. fuel
- 9. drinking glass
- 13. wood
- 15. path
- 19. pollution
- 20. coal