As unwanted pollutants, gasses, and contaminants penetrate the air and the soil, they affect wildlife and disrupt the Earth's natural cycles. Nature is responsible for some of the toxins in the air. However, human activity is a major source of air pollution, especially in large cities. The combustion of fossil fuels is one of the important sources of air pollution caused by humans. Coal, oil, and natural gas are examples of fossil fuels. When we burn them, we emit various gases into the air, including carbon dioxide, sulfur dioxide, and other hazardous chemicals, resulting in air pollution such as smog. Gases released into the atmosphere may have a variety of negative consequences for the climate, resulting in acid rain and respiratory diseases such as asthma.
