Question: where is the pollution in delhi coming from

title: Environmental issues in Delhi
text: Overpopulation and the ensuing overuse of scarce resources such as water put heavy pressure on the environment . The city suffers from air pollution caused by road dust and industry , with comparatively smaller contributions from unclean engines in transportation , especially diesel - powered city buses and trucks , and 2 - wheelers and 3 - wheelers with two - stroke engines. Another known cause of pollution is slow moving traffic due to pedestrians crossing the road just about anywhere . Noise pollution comes mainly from motorcycle and automobile traffic . Water pollution and a lack of solid waste treatment facilities have caused serious damage to the river on whose banks Delhi grew , the Yamuna . Besides human and environmental damage , pollution has caused economic damage as well ; Delhi may have lost the competition to host the 2014 Asian Games because of its poor environment . 

Answer: answer: Delhi suffers from air pollution caused by road dust and industry, with comparatively smaller contributions from unclean engines in transportation, especially diesel powered city buses and trucks, and 2 wheelers and 3 wheelers with two-stroke engines. Another known cause of pollution is slow moving traffic due to pedestrians crossing the road just about anywhere. Water pollution and a lack of solid waste treatment facilities have caused serious damage to the river on whose banks Delhi grew, the Yamuna.