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stellarelli stellarelli
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6 years ago
The primary causes of acid deposition are ________.
 
  A) soil dust and sand
  B) sulfur dioxide and nitrogen oxides
  C) tropospheric ozone
  D) radon gas and fuelwood smoke
  E) carbon monoxide and formaldehyde
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vazadirvazadir
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6 years ago
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stellarelli Author
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6 years ago
Good timing, thanks!
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Yesterday
Thanks for your help!!
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2 hours ago
Thanks
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