Acid rain is more acidic than ‘normal’ rain. The acidity of acid rain can be as low as pH 4. What causes.
this low pH?
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Normal, clean rain has a pH value of between 5.0 and 5.5, which is slightly acidic. However, when rain combines with sulfur dioxide or nitrogen oxides—produced from power plants and automobiles—the rain becomes much more acidic. ... A decrease in pH values from 5.0 to 4.0 means that the acidity is 10 times greater.
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this low pH caused damaged to our skin .for ex skin cancer, skin burning and other the ph of this is low than 4 this mean it is strongly acidic
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