Across
- 5. cleaning the air around fossil fuel burning
- 9. extracting oil
- 10. to much demand
- 12. manmade
- 15. agreement
- 18. positive theory
- 19. groundwater
- 20. color
Down
- 1. maintain a certain level
- 2. doubtful
- 3. Temperature
- 4. negative theory
- 6. greenhouse gasses
- 7. reduction of carbon
- 8. resources to use again
- 11. not enough water
- 13. no investment in the water
- 14. big problem
- 16. regular access to water
- 17. to much extraction