ratio of pollution level among various countries
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India should follow China's example and clean up the air in its cities, which are among the world's worst for outdoor pollution, the World Health Organization said on Wednesday.
The WHO's database of more than 4,300 cities showed Indian cities such as New Delhi, Varanasi and Patna were among the most polluted, based on the amount of particulate matter under 2.5 micrograms found in every cubic metre of air.
Chinese cities such as Xingtai and Shijiazhuang and the Saudi refining hub at Jubail were also highly polluted, but the data for those places was 4-5 years old, and Maria Neira, WHO's head of public health, said China had made big improvements that India should follow.
Step-by-step explanation:
RankCountry/Region2019 AVG1Bangladesh83.302Pakistan65.813Mongolia62.004Afghanistan58.80