What is Acid Rain?
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What is Acid Rain? Characterized as containing harmful levels of sulphur dioxide; acid rain is damaging and potentially deadly to the earth's fragile ecosystems; acidity is measured using the pH scale where 7 is neutral, values greater that 7 are considered alkaline, and anything measured below 5.6 is considered acid precipitation; note - a pH of 2.4 (the acidity of vinegar) has been measured in rainfall in New England. How acid rain is formed in industrial areas and distributed over long distances, where it can kill trees and damage buildings and statues "Acid rain" is a broad term used to describe several ways that acids fall out of the atmosphere. A more precise term is acid deposition, which has two parts: wet and dry. Wet deposition refers to acidic rain, fog, and snow. As this acidic water flows over and through the ground, it affects a variety of plants and...

