Water

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Across
  1. 3. there is only one of these in a water atom
  2. 4. a natural underground water tank
  3. 6. another word for water cycle
  4. 7. The first people treating drinking water.
  5. 10. what creates runoff
  6. 12. 2% of water is
  7. 13. you use chlorine for this
  8. 14. The type of water that cover the most of the earth
Down
  1. 1. when water evaporates it turns into...
  2. 2. The two atoms in water that are in water that are the same
  3. 5. what forms clouds
  4. 8. what is it called when water goes into the sky and back down
  5. 9. what is the thing that cleans water
  6. 11. another word for frozen water
  7. 15. water is made up of...