Acid rain is a type of precipitation with high acidity caused by the polluted atmosphere. It comes down in different types of precipitation such as: rain, snow. hail, or sleet. Acid rain is gradually wearing down our environment, affecting countries in almost every continent. One of the main causes of acid rain is sulphur dioxide. Natural sources which gives out these gases are volcanoes, sea spray, rotting vegetation and plankton. However, the burning of fossil fuels, such as coal and oil causes approximately half of the emissions of this gas in the world. When sulphur dioxide reaches the atmosphere, it oxidizes to first form a sulphate ion. It then becomes sulphuric acid as it joins with hydrogen atoms in the air and falls back down to earth. Nitric oxide and nitric dioxide are also components of acid rain. Its mainly caused by exhaust....

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Number Of Words: 795

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