Acid rain is a widespread problem all over the world. It is the result of chemicals from burned fossil fuel mixing with moisture in the atmosphere and falling to the ground as rain, snow, sleet etc. Human activities are mainly responsible for acid rain. Over the past few decades, humans have released so many different chemicals into the air that they have changed the mix of gases in the atmosphere. Besides, natural sources such as erupting volcanoes, rotting vegetation and sea sprays produce sulfur dioxide and fires, bacterial decomposition and lightning generate nitrogen dioxide. The chemicals released by natural sources get mixed up with water and oxygen and get dispersed over large areas because of wind patterns and cause acid rain.
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However acid rain has significant effects on the world environment and public health. Due to acid rain the PH level of water falls so much below that the conditions become hostile for the survival of aquatic life. It makes trees vulnerable to disease, extreme weather, and insects by destroying their leaves, damaging the bark and arresting their growth. It also kills useful micro-organisms and leaches nutrients of soil. Acid rain on buildings, especially those constructed with limestone, react with the minerals and corrodes them away. This leaves the building weak and susceptible to decay. In fine, acid rain causes a great effect on public health leading to injuries and deaths.
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