The bar chart shows the levels of air contamination raised by three things from four countries in 2021.
Overall, it is clear that the highest point of air pollution level is China among the four countries. In General, we can see that there is the least pollution in Australia.
In the three things that cause air pollution, China has the highest rate of air pollution among the four countries. These figures for Industry, transport, and electricity generation are 80%, 70%, and almost 60%, respectively. However, in Australia, the air pollution proportion is the lowest among other countries, and three main features show roughly equal to approximately 20%.
In the USA, transport caused by air pollution was higher than the other category of America. This figure is about 60 %. But, the air pollution caused by Industry and electricity generation is nearly equal to those. These were about 30%. However, In Japan, the Industry occurs due to air pollution at the highest point, followed by transport and electricity generation at 30 %, 15%, respectively.