Water systems

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Across
  1. 2. gases that surrond earth
  2. 7. Removing salt from water to make water drinkable
  3. 9. man made way to supply plants,agriculture, and crops
  4. 10. water beneath the eath's surface
  5. 11. Removing harmful substances to make it suitable for consumption
  6. 12. A chemical to clean water
Down
  1. 1. Amount of heat an object can store and release
  2. 3. A change in regular tempreture in a place
  3. 4. microorganisms that are like germs
  4. 5. A method to break down bad parts of water
  5. 6. Water with harmful checmicals
  6. 8. A body of underground rock
  7. 10. compressed snow, rocks, or sediments