What are acid rains?

What are paneling come down downs? Acid pelting is another side-effect of civilization. As soon as acid rain was discovered and understood, it was attributed to world action. (Jurgen Stock, Arthur R. Upgren, p.4)Acid rain cannister be called any(prenominal) atmospheric diminish (rain, snow, smog, rain with snows, etc) which has the sideline characteristics the increased level of acids ( mainly sulphuric acid) and the hydrogenous indicator of pH is less(prenominal) than average forefinger of rain peeing (average pH for rain water is 5.6), mainly it is rain with pH