Across
- 3. Rain with sulfur in it
- 7. May be harmful to bees or other insects
- 8. What is done to preserve nature
- 10. That the water stays clean, use
- 12. A lot of fertilizer pollutes
- 13. Threatens the climate?
- 17. Should not be used much in the farms
- 18. When too much forest is cut down
- 19. Exhaust gases pollute?
Down
- 1. If heat energy does not leave the earth
- 2. Ozonedepletion
- 4. In the ground are?
- 5. Not buying new things and reusing them?
- 6. Restores the forest
- 9. What to do with garbage?
- 11. When the water runs out
- 14. Protects animals
- 15. If the toxic waste gets into the soil it becomes contaminated
- 16. So the air stays clean in the house, use