Across
- 3. woods/forest
- 5. electricity
- 7. to recycle
- 9. to discover
- 10. to explore
- 13. border
- 15. to protect
- 16. island
- 18. desert
- 19. moon
- 21. environment
- 22. plant
- 23. plastic
Down
- 1. glass
- 2. sun
- 3. to throw away
- 4. lake
- 6. dry
- 8. to take care of
- 11. town
- 12. region
- 14. nature
- 17. drought
- 20. tree
- 23. country