when is noise pollution added in pollution list
Noise pollution Up until the 1970s governments tended to view noise as a "nuisance" rather than an environmental problem.
Smog For the past few years, cities in northern India have been covered in a thick layer of winter smog. The situation has turned quite drastic in the National Capital, Delhi. This smog is caused by the collection of Particulate Matter (a very fine type of dust and toxic gases) in the air due to stagnant movement of air during winters.[41]