What causes air pollution?

air pollution can be defined as any harmful material that is present in the Earth's atmosphere. The causes of air pollution are therefore many and very diverse. Some sources are natural, such as volcanism or forest fires launched by flash, while others are caused by human activity such as combustion of fossil fuels. While the Earth has built -in mechanisms for deprivation of air pollution, it is usually better for all living things to reduce the amount of pollutants released into the air. The burning of oil products is a very common cause of air pollution, especially in metropolitan areas. This pollution comes from the chemical factors present when these fuels are burned. When hydrocarbons such as gasoline are burned, carbon dioxide and water vapor produce. Incomplete combustion leads to the formation of carbon monoxide as a by -product.

Carbon and carbon oxide is considered to be pollutants. Also no fossil fuel is perfectly clean and no motor nesIt is perfectly effective, so that small soot particles are also released into the atmosphere, along with the trace of other undesirable substances. Other causes of air pollution include emissions of chimneys from factories and power plants. Substances issued in these sources may include sulfur dioxide and nitrogen oxide, which are responsible for the formation of acid rain.

While air pollution caused by man represents health risks, natural sources of air pollution can sometimes be equally dangerous. These sources include dust picked up by wind erosion, methane emissions and fire from fires. Volcanic eruptions may be the largest only source of air pollution, natural or man ever dealt with. These can produce clouds of abrasive ash and other harmful substances such as chlorine and sulfur.

most remarkably, the eruption of the Indonesian Mountain Tambor in 1815 sent to the atmosphere TaThe huge amount of harmful gases and particles that many solar energy were effectively blocked in achieving the Earth's surface. As a result, extensive famine suffered around the world in 1816. In Europe, brown and red snowfall was also observed due to the presence of volcanic ash in the atmosphere. Frazing killing in July 1816 also led to massive crop failures in the northeastern United States, which led to colloquial references to 1816 as "a year without summer" and "eighteen hundred and stiffened to death."