SO2 emissions, by world region (in million tonnes)
This chart shows, a million tonnes of SO2 emissions, Asia is lead with 50 million tonnes in 2010. Source: https://ourworldindata.org/air-pollution
Consanguineous marriage – World
This graph shows, the marriage takes place between family, India exists in 10 % to 40 % in such marriage. Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3419292/