Brae 348
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Brae 348 7
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Brae 348 Final Questions and Answers
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Brae 348 Final Questions and Answers 
 
Main components of air? ** Answ** Nitrogen 78%, Oxygen 21% 
Argon .9%, Carbon Dioxide .03% 
 
Define Air Pollutants ** Answ** Those substances added by humans that are toxic or irritant to animals, vegetation, or property. 
 
NOAA ** Answ** National Oceanic & atmospheric administration
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