Across
- 6. Top level of an aquifer
- 7. Type of contaminant
- 8. Underground area saturated with water
- 10. Only substance found naturally in all three states
- 11. Unwanted substance in a mixture
- 12. Change of state from gas to solid
- 14. Process of removing salt from water
- 16. Desalination requires a great deal of ...
Down
- 1. Pure water has no ...
- 2. 97% of world's water
- 3. Water is made of one oxygen and two ... atoms
- 4. Change of state from gas to liquid
- 5. Change of state from solid to gas
- 9. This chemical increases algae growth
- 13. Amount of dissolved salt in water
- 15. Result of water vapour condensing around burned fossil fuels