How polluted are the Great Smoky Mountains?



  1. 0 Votes

    The Great Smoky Mountains have the most polluted air in America. The smog and ozone levels are as high as they are in Los Angeles, and as of 2002, very little improvement had been seen since the most recent amendment of the Clean Air act in 1990.

Please signup or login to answer this question.

Sorry,At this time user registration is disabled. We will open registration soon!