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Acid rain is all types of meteorological precipitation – rain, snow, hail, fog, rain with snow – in which there is a decrease in the pH (hydrogen index) of precipitation due to air pollution with acid oxides, usually sulphur oxides and nitrogen oxides.

The water of ordinary rain is also a slightly acidic solution. This is due to the fact that natural substances of the atmosphere, such as carbon dioxide, react with rainwater. In this case, a weak carbonic acid is formed, whereas ideally the pH of rainwater is 5-6,5-7. In real life, the acidity of rainwater in one area may differ from the acidity of rainwater in another area. This primarily depends on the composition of gases contained in the atmosphere of a particular area, such as sulphur oxide and nitrogen oxides. Scientists around the world are looking for ways to solve the problem of acid rain. One of the main methods of control is the installation of expensive treatment facilities at each enterprise, whose filters will prevent the release of heavy metals and dangerous oxides. Such installations will not only reduce the likelihood of acid rain, but also make the air cleaner.

Another way to solve the problem is to reduce the number of vehicles in large cities in order to reduce exhaust emissions. In addition, forests should be restored, not cut down, polluted water bodies should be cleaned, rubbish should be recycled, not burned.

The search for alternative sources of energy production, environmentally safe vehicles, new production technologies and technologies for cleaning emissions into the atmosphere is an incomplete list of what humanity is obliged to take care of, so that the consequences do not become catastrophic, it is almost impossible to fight with the precipitation itself. Falling on huge territories, acid rain causes significant damage, and there is no constructive solution to this problem.

Another thing is that in the case of acid rain, it is critically necessary to deal not with the consequences, but with the causes of such a phenomenon. Therefore, all of humanity should think about how many harmful substances we emit into the atmosphere and think about obtaining and using more and more alternative energy sources that are less harmful than modern ones.