smog has been a line in coal- fire areas for several centuries. smogginess finally decreased when coal combustion was replaced by crude and gas combustion. Air pollution is caused by a check of different types of pollutants. The first type, particulate matter, consists of solid and liquid aerosols head off in the atmosphere. These arise from the burning of coal and from industrial processes. atmospherical particles can s...If you want to get a full essay, modification it on our website: Ordercustompaper.com
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