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Causes And Disadvantages Of Air Pollution

1085 words - 4 pages

Air pollution is a major problem facing our environment today. This dilemma is harmful to every living creature on this planet. How can we limit the causes of air pollution? There are industrial as well as residential causes of air pollution. We need to limit the effects of air pollution. We all know it affects the environment, but it also can affect us directly. Air pollution needs to be controlled. Air pollution can be defined as pollution in the air. It is all around us. It might not be as clearly visible in some areas as others but the fact is that air pollution is still there affecting us in some way. It has been known to cause illness or even death. Many people are not aware of this. The air that surrounds us is a mixture of 78 percent nitrogen; 21 percent oxygen; less than 1 percent of carbon dioxide, argon, and other gases; and varying amounts of water vapor. Any other particles, gases or unoriginal constituents hanging in the air which are not part of its original composition are called 'Pollutants' and this kind of air is called Polluted Air. Even inhaling small amounts of such air pollutants can have serious effects on one's health and leads to environmental problems. We can see some air pollutants such as the reddish-brown haze in smog; however, other air pollutants, including some of the most dangerous, are invisible.There are two main causes of air pollution. One of the main causes is natural pollution. Natural pollution is just windblown dust, pollen, fog, and other natural forms. The other main cause is people pollution. People pollution is the main concern and most serious form. Most of people pollution is caused by industry, cars, trucks, and airplanes. The residential causes are automobile emissions and forest fires. Industrial causes are those such as factory emissions and the burning of fossil fuels. One residential cause is the emissions of automobiles. This is probably the most harmful cause. People have drive automobiles every day to get from one place to another. If automobiles did not exist, the air would be cleaner. But the luxury of being able to travel long distances in short periods would be gone. This is a problem because people need to go places, but automobile emissions are still harmful to the environment.Motor vehicle emissions are generated in several different ways and locations during their operation. The most important sources are those produced in combustion and vented through the exhaust pipe. These exhaust gases consist mainly of unburned HCs, CO, and NOx and it accounts for approximately 90- 92% of all vehicle emissions. Some products of combustion are not vented through the exhaust system because they slip by the piston rings and the cylinder walls. These "blowby" gases are mainly unburned HCs that accumulate in the crankcase exhaust port. A third source of emissions is the votalization of HCs through the carburetor and fuel tank vents. Carburetor emissions are pronounced during the time the engine...

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