air pollution is the contamination of the atmosphere by pollutant, such as gaseous, liquid, as solid wastes that can endanger the health of human beings, plants

air pollution is the contamination of the atmosphere by pollutant, such as gaseous, liquid, as solid wastes that can endanger the health of human beings, plants and animals or that can damage materials and reduce visibility.
pollution levels are often reduced by atmospheric mixing, which depends on such weather conditions as temperature and the movement of high and low pressure systems. An inversion, which occurs when a cold layer of air settles under a warm layer, can slow atmospheric mixing and allow pollutant to accumulate hazardously near the ground.
the effect of long-term exposure to low concentrations of pollutions are not well known, although the very young, the elderly, smokers, and people with heart or lung disease are considered most at risk


1.how is the process of air pollution?
2.what are the effect of air pollution?
3.what is the main idea of paragraph one two and three?
4.can you classify each parapragh above?
5. what are the content of each paragraph?