Across
- 2. an elevated land that drains water ontop of it into a close body of water
- 7. small microorganisms that can be good or bad
- 12. a layer of gases that surround the earth
- 13. making water suitable to drink by removing all germs, bacteria and chemicals
- 14. the cycle of water
- 15. make water unsafe to drink and can contain harmful chemicalsf
- 18. large changes in a climates normal tempatures
- 19. a body of underground rock that holds groundwater
- 21. a layer of snow that covers a large area and is heavily compressed
- 22. the climate or tempature that changes daily
- 25. uses microorganisms to break down the bad parts in water and soil
- 27. a chemical that is used to keep water clean
Down
- 1. a microscopic organism
- 3. a word that in science often means replacing water
- 4. how much salt is in water
- 5. finding a way to make sure that there are enough resources for the future
- 6. a man made way to provide plants, agraculture and crops with water
- 8. removing salt from water in order to be able to drink it
- 9. the amount of heat an abject can store and release
- 10. snow, rock and sedimaent compressed together
- 11. a large body of water between different land masses
- 16. something that keeps waste water contained underground
- 17. water that is found underground
- 20. a table of water that is located underground
- 23. a flooded area of land that can sustain lives of many animals and insects
- 24. a body of water that flows and will often connect to a larger body of water
- 26. a way of collecting water from the ground