Across
- 4. no water to a city
- 6. rain
- 11. hotness to a city
- 12. big bombs
- 13. diversity in an ecosystem
- 15. energy energy that is renewable
- 16. pollution pollution to the air
- 18. bigwaves
- 19. part of a chemical that makes acid rain
- 20. bad gases
Down
- 1. what we breathe out
- 2. wheather
- 3. fuels crude oil
- 5. big winds
- 7. to be able to maintain something
- 8. oxide the other part that makes acid rain
- 9. climate
- 10. glaciersmelting
- 14. energy energy from the sun
- 17. cutting trees down