The Story of Drinking Water

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Across
  1. 1. take a piece of hot _____ to clean water
  2. 3. earths surface is ____ percent made up of water
  3. 6. what percent of water is in a apple
  4. 7. ______ of molecules of water are in a single drop
  5. 9. first to record methods for treating water
  6. 11. our blood is _____ percent of water
  7. 12. ___ percent of water on earth is glaciers
  8. 13. fist country to use chlorine to kill bacteria
  9. 15. less than _____ percent of water is fresh water
Down
  1. 2. ___ percent of water on earth is salt water
  2. 4. water freezes at this temp
  3. 5. you can _____ water to clean it
  4. 8. water boils at this temp.
  5. 10. you can ____ water in the sun to clean it
  6. 14. the earth would look like the _____ without water