Water

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Across
  1. 4. When you do not know where the pollution is coming from.
  2. 9. the amount of dissolved material in sea water.
  3. 10. 7 is neutral and lower then 7 is acid and higher then 7 is alkaline.
  4. 11. Is when water from the city is taken to a water plant and is cleaned and safe for drinking or use.
  5. 13. the cloudiness in water.
  6. 14. water safe enough for humans to drink.
Down
  1. 1. is a law in the Unite States governing water pollution.
  2. 2. You know where the pollution is.
  3. 3. an organism that is healthy for the ecosystem.
  4. 4. salt in nitric acid.
  5. 5. water safe enough to use and sometimes drink.
  6. 6. it is a law in the United States that says water has to be safe enough to drink.
  7. 7. how hot or cold it is.
  8. 8. salt in phosphoric.
  9. 12. your own sewage system.