Across
- 2. the solid form of water, produced by freezing
- 4. salt water that cover the greater part of earth's surface
- 6. to consume, spend, or employ uselessly
- 9. a source of supply, support, or aid
- 11. place where water is collected and stored for use
- 14. introduction of harmful substances into the environment
- 17. a body of fresh or salt water of considerable size, surrounded by land
- 18. gradual increase
- 19. prevention of waste; preservation
- 20. any complete round that repeats or is repeated
Down
- 1. water fallen as rain
- 3. a transparent, odourless and tasteless liquid
- 5. newly made or obtained
- 7. a body of water flowing in a channel or watercourse
- 8. the process of removing salt from sea water
- 10. fresh water that can be found deep underground
- 12. a precipitation in the form of ice crystals
- 13. costly
- 15. vast body of salt water that covers almost three fourths of earth's surface
- 16. suitable for drinking
