Smog as Air Pollution

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utNowadays pollution is becoming more and more serious problem, particularly air pollution. Since the beginning of the industrial revolution, the chemical elements of the atmosphere have changed. Along with the development of industrialization, air pollution has spread and now it is a global issue. There are many kinds of air pollution, one of them is smog. Smog can come from many areas, particularly factories and transportation systems, but there are some differences between developed and developing countries. In developed countries, highly developed industry is the main reason that smog is serious, they mostly use fossil fuels. However, developing countries started to industrialize, so increasing number of factories is the most important cause of smog and they always use the coal or wood burning. More and more people using cars and motorcycles also is a reason about that. Those of us who live in large cities are familiar with smog air pollution; the familiar brown haze resting over the city on a still day. We need to know what smog contains and where it comes from, as well as the health and environmental impacts of this hallmark of industrialization. There are two categories of smog to be covered: classic smog and the more recently described photochemical smog.
Classic Smog In its most primitive and basic form, smog air pollution is the result of the burning of fossil fuels. It has several major components:
1) Smoke, which is tiny particles of ash, is released from the smokestacks of coal fired power stations. Coal power plants are now on the whole designed to trap this ash, called fly ash, which can be used to great effect in the concrete industry. These tiny particles contain not only carbon residue, but also silicon dioxide, calcium oxide and traces of heavy metals. If inhaled these can pose significant health risks. The silicon dioxide in the fly ash alone can cause lesions, scarring and inflammation of the lungs.
2) Sulfur Dioxide. Sulfur

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