Industrialization has increased the amount of gases that could cause acid rain into the atmosphere. Rain water from roofing sheets are used to cook, wash, e.t.c. in Nigeria and some under-developed countries. In this book, stone coated roofing sheets were dissolved in acid and inference drawn from the concentration of Lead, Iron, Zinc, Aluminium, Silicon, and Cadmium washed away from the roofing sheets.
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