Across
- 6. Used for producing batteries (7)
- 9. gas used in air conditioners (5)
- 11. water release when the glacier melts (9)
- 12. this ocean had the largest oil spill (8)
- 13. source of emission from agriculture (6)
- 14. burning this causes pollution (4)
- 15. another word for reuse (7)
- 17. heat from inside of earth (10)
- 19. used for keeping swimming pools clean (8)
- 20. #1 cause of pollution today (7)
Down
- 1. example of a clean gas
- 2. one of the biggest holes in atmosphere (5)
- 3. 7 letter word for green energy
- 4. abundant source of energy (5)
- 5. Mix of this & petrol makes fuel better (7)
- 7. used to purify water (6)
- 8. waster water from domestic usage (6)
- 10. example of green house gas (7)
- 16. technology of tomorrow (8)
- 18. a dangerous contaminant in ground water (4)