Final answer:
Linfen is the most polluted city on Earth due to its heavy reliance on coal mining and heavy industry.
Step-by-step explanation:
Air pollution refers to the presence of harmful substances in the air, resulting from human activities or natural processes, at levels that adversely affect human health, ecosystems, and the overall quality of the atmosphere. The pollutants involved can be gases, particulate matter, biological molecules, or other harmful materials. Major sources of air pollution include industrial emissions, vehicular exhaust, agricultural activities, and natural sources like wildfires and volcanic eruptions.
The name of the most polluted city on Earth is Linfen, located in Shanxi province, China. Linfen has gained this unfortunate distinction due to its heavy reliance on coal mining and heavy industry, resulting in severe air pollution. The city suffers from high levels of particulate matter and other pollutants, which have significant impacts on the health of its residents.