5. A review on acid rain: An environmental threat
Abstract
Acid rain is one of the utmost serious environmental problems that arose due to air pollution. It also contributes to climate warming. It has a pH of less than 5.6. The main purpose of the review is to emphasize the causes of acid rain, its various effects, and different ways to control acid rain. Data for the last few decades on acid rain is summarized in this review. The primary cause of acid rain is the emission of Sulphur dioxide and nitrogen oxide. These environmental pollutants come from various activities of humans such as the combustion of fossil fuels, burnable waste in automobiles, and thermal power plants. These chemicals become acidic after mixing with the rainwater and precipitate in the form of rain, fog, and snow and exert various effects on the ecosystems, forests, plants, soil, buildings, monuments, and water bodies as well as on human health. Its effects can be reduced by decreasing the Sulphur dioxide and nitrogen oxide emission and by adding lime into lakes, streams, and soil which neutralize the acidity. Several legislations should also make to control acid rain. Its control is necessary, to maintain food sustainability, environmental sustainability, to save the biodiversity of earth and human wellbeing.
Keywords: Atmosphere; Environment; Effects; Nitrogen; Pollutants; Sulphur
