
smog has been a problem in coal-burning areas for several centuries. smog finally decreased when coal combustion was replaced by oil colour and gas combustion. Air pollution is caused by a supplement of different types of pollutants. The first type, particulate matter, consists of solid and liquid aerosols fend 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, revision it on our website: BestEssayCheap.com
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