The given chart illustrates main pollutants and their origin in four different metro cities over the world in the year 2017
In overall,In primary pollutants the carbon monoxide holds the largest number and on other hand the transportion holds the highest percentage as a source of pullutants
As we can see carobon monoxide is the greatest medium in primary pollutants which holds the 51.10% and after that there are three types of pollutants which cross 10% and they are nitrogen oxides,volatile organic compund and solid waste disposal and in the last with least percantage comes particulates
And in source of pollutantants the tarnsportion cause the highest pollution in compared to any other factors and that stationary source fuel combustion comes with 25.30% and with the least amount of pollution is produced by miscellaneous
