The concentration of acid rain varies all over the country. In the US, the states to the West are less acidic then the states in the Northeast. The red and orange areas are very acidic, the yellow areas are a medium acidity, and the green and light green are not very acidic. Most of the United States is not very acidic, so that is a good sign.
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The concentration of acid rain also effects large countries such as China. Since China is a largely populated country, acid rain is more common there than it is in smaller countries such as Italy.
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