Tennessee is a US state in the South known for its rich history, music, and the Appalachian Mountains along its eastern border.
The Great Smoky Mountains National Park is a World Heritage Biosphere Reserve and draws millions of visitors from around the region and the world annually. Covering nearly 1,000 square miles it is home to temperate rainforests and some of the rarest and most unique plant life in North America.
The park suffers from high levels of air pollution due to surrounding cities such as Knoxville and Sevierville as well as the numerous coal-fired power plants of the Tennessee Valley Authority.
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