Acid Rain

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Across
  1. 1. act passed in 1970
  2. 2. quick fix for acidic water
  3. 3. scale to measure amount of acid in a liquid
  4. 4. made when sulfur dioxide is combined with water
  5. 6. one of the six common pollutants
  6. 8. natural cause
  7. 9. when burned, enter atmosphere
  8. 11. when burned, caused acid rain many years ago
Down
  1. 1. device in cars that unpollutes acids
  2. 3. unnatural cause
  3. 5. discovered acid rain
  4. 7. acidic chemicals mix with dust or smoke
  5. 10. renewable fuel made from plants