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Poison
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been found to be as acidic as vinegar. So has the fog on parts of the Skyline Drive, which runs along the park’s mountain ridges. Officials occasionally have had to issue health warnings to park visitors because of the poor quality of the air.
Visibility in the summer has, decreased by 80 percent of what it was in 1948. This spring, the pH of some streams in the park was measured at 5.0. Were this level sustained, the acidity would kill native brown and rainbow trout, smallmouth bass, fathead minnows and several other forms of aquatic life, according to the Fish and Wildlife Service.
Deposits formed from sulfur dioxide — the main component of acid rain and a common industrial pollutant — hurt aquatic life, trees and plants in the park, in a way that weakens their resistance to the effects of other natural diseases, says Julie Thomas, the park’s air quality program manager.
MIn some ways it’s a little bit like AIDS. Although they (pollutants)
88.2%