The charts shows air pollution levels by different causes among four countries in 2021. Summaries the information by selecting and reporting the main features, and make comparisons where relevant.

An inception of the data in bar charts reveals comparison between four countries, namely China, America, Japan, and Australia, in terms of the levels of air pollution by three various factors in 2021. From the overall perspective, it can be clearly observed that in most cases, industry was responsible for pollution of the atmosphere. Meanwhile, China is considered to be the most contaminated country from all aspects, while Australia is the cleanest one. To begin with, the area of manufactory contributed 80 PPM to air pollution of China, whereas Australia experienced just less than 20 PPM. Likewise, the level of atmosphere’s contamination in Japan was half as much as in China, and figures for America comprised about 30 PPM. The effects of transportation are mostly seen in China and America, while the former accounted for 70 PPM, the latter made up approximately 60 PM. Electricity generation negatively impacted on the air of China (approximately 60PM), however there was half as much as damaging consequences on America. With respect to the atmosphere pollution in Japan and Australia, it was caused insignificantly by transport and electricity generation (under 30 PPM).