Across
- 2. factory
- 4. sun
- 7. grass
- 8. valley
- 10. trail;path
- 12. moon
- 17. recycling
- 18. clouds
- 19. stone
- 20. flowers
- 21. cow
- 22. bird
- 24. volcanoes
- 28. lake
- 29. glass
- 30. aluminum
Down
- 1. forest
- 3. trees
- 5. jungle
- 6. pure
- 9. stars
- 11. desert
- 13. nature
- 14. sky
- 15. fish(pl.)
- 16. plastic
- 23. land;soil
- 25. crater
- 26. river
- 27. danger