what is acid rain ? how can Ph of soil be measured?
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Acid rain is a form of precipitation that is usually acidic and harms any ecosystem.
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tropical acid rain has the PH value of 4.0.A decrease in pH values from 5.0 to 4.0 means that the acidity is 10 times greater.there are many hightech devices is use to measure pH in laboraties.One easy way that you can measure pH is with a strip of litmus paper.
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