Acid Rain
Acid rain, or acid deposition, is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms. This can include rain, snow, fog, hail or even dust that is acidic . Acidity is determined on the basis of the pH level of the water droplets. Normal rain water is slightly acidic with a pH of 5.6, because carbon dioxide and water present in the air react together to form carbonic acid, which is a weak acid. When the pH level of rain water falls below this range, it becomes acid rain (Typically acid rain has a pH value of 4.0) . CAUSES OF ACID RAIN Natural Causes Natural sources comprise of Volcanoes as Sulfur dioxide can be emitted into the atmosphere. Some natural processes also contributes such as soil, forest fires, volcanic action and lightning these contributes to Nitrogen oxide emissions. Anthropogen
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