In addition to the influence of smog weather, what other environments are there in the development process?

In a clean atmosphere, the composition of trace gases can be ignored. However, in a certain range of the atmosphere, there are trace substances that have not been found before, and their quantity and duration may have adverse effects and harm on people, animals, plants, articles and materials. When the concentration of pollutants in the atmosphere reaches a harmful level, it will even destroy the ecosystem and the conditions for the normal survival and development of human beings. The phenomenon that harms people or things is called air pollution. The causes of air pollution are both natural factors and human factors, especially human factors, such as industrial waste gas, combustion, automobile exhaust and nuclear explosion. With the rapid development of human economic activities and production, while consuming a lot of energy, a large number of waste gas and smoke substances are discharged into the atmosphere, which seriously affects the quality of the atmospheric environment. Especially in densely populated cities and industrial areas, the so-called dry and clean air refers to the natural air (composed of mixed gas, steam and impurities) after removing water vapor and impurities, and its main component is nitrogen, accounting for 78.09%; Oxygen, accounting for 20.94%; Argon, accounting for 0.93%; Other trace gases (such as neon, helium, carbon dioxide, krypton), the content is less than 0.65438 0%.