Across
- 1. Dirty air from cars or fire
- 2. Grows in the ground
- 4. Black liquid
- 8. Cutting trees
- 11. Trash on the ground
- 12. Dangerous
- 13. What we breathe
- 14. Symbol for nature
- 15. We drink and we use it
Down
- 1. Gives light and energy
- 3. Living creatures
- 5. Use again
- 6. Body of water
- 7. Power we use
- 9. Our planet
- 10. Weather conditions