The chart provides information about the level of air pollution because of electricity generation, transportation and industry in four countries China, America, Japan, and Australia in 2012. Overall, turning to chart it is clear that the least pollution was in Australian. While, the most polluted country was in China among the others in 2012.
To begin, in China, industry had to largest impact on air pollution at 80 ppm and reached in the highest level throughout 2012. followed by transportation and electricity reached under 60 ppm and 70 ppm. Moreover, in America, the level of air pollution related to transportation close to 60 ppm. Then, respectively, electricity and industry caused pollution to around 30 ppm.
Next, we can observe that industry had a significant impact on air quality more than 40 ppm. Also, transportation made up second at 30 ppm and the lowest category was electricity around 15 ppm. Finally, in Australian all three factors played a similar role in the contamination of this country approximately 20 ppm in 2012.