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Acid rain contains acids that form up in the atmosphere when gas emissions such as, nitrous oxide and sulfur oxide combine with water vapour. About 70% of acid rain comes from sulfur dioxide (SO2) which dissolves into water (H2O) to form sulfuric acid. The rest of the gasses come from nitrous oxides (NOx) which are made up of various forms of nitrogen (NO2 + NO3). These gasses are caused by burning fossil fuels mainly coming from power stations and motor transport. Acid rain causes acidification of lakes and streams and contributes to damage of trees, soils and living organisms which live in the earth and lakes. Acid rain accelerates the rotting of building materials. Prior to falling to the earth, sulfur dioxide (SO2) and nitrous oxide (NOx) gases contribute to poor visibility and harm public health. Acid rai