environment

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Across
  1. 4. excessive amount of noise or an unpleasant sound that causes
  2. 5. harmful to humans and the environment
  3. 9. can only be used once
Down
  1. 1. one that can be used again and again
  2. 2. an increase in the earth's average atmospheric temperature that causes changes in climate that may result from the greenhouse effect
  3. 3. rain that contains a high concentration of pollutants
  4. 6. smoke and other pollutants combined with fog
  5. 7. contamination of the earth
  6. 8. pollutants can affect the