Major sources of pollution

The most large-scale and significant is the chemical pollution of the biosphere with substances unusual for any element of it. Among them are gaseous and aerosol pollutants produced by industrial plants and factories. The carbon dioxide is another pollutant accumulating in the atmosphere. This leads to undesirable tendency of the increase of the average annual temperature all around the globe, in other words warming up of the air that leads to melting of the arctic ices. Another serious concern is continuous pollution of the world ocean with oil and oil products. If nothing is changed this will undoubtedly lead to the change in the global water and gas cycle going on between the hydrosphere and atmosphere. And the third cause for concern is the enormous quantity of pesticides in soil and its increased acidity leading to the disintegration of the whole ecosystem.

Among the main atmosphere pollutants are large-scale industry, domestic boilers and transport. The portion of each of these pollutants is different from place to place, but industrial companies are considered to be the worst pollutants.

The sources of pollution are thermal power plants that together with smoke throw out sulfur dioxide gas and carbon dioxide; metal manufactures throwing out nitric oxides, hydrogen sulfide, chlorine, fluorine, ammonia, phosphor compounds, mercury and arsenic; chemical manufactures and cement plants. Atmosphere pollutants are divided into primary and secondary ones.