Explanation – Carbon dioxide (CO2) and methane (CH4) are classified as greenhouse gases and are also responsible for causing air pollution. Whereas, sulfur dioxide (SO2), nitrogen dioxide (NO2), and carbon monoxide (CO), are air pollutants but not greenhouse gases.

Greenhouse gases are gases that trap heat in the Earth’s atmosphere, contributing to global warming. CO2 is the primary greenhouse gas, responsible for about 60% of global warming. It is primarily released from the burning of fossil fuels, such as coal, oil, and natural gas.

CH4 is another potent greenhouse gas, with a global warming potential 25 times higher than CO2. It is primarily emitted from agricultural activities, such as livestock production and rice cultivation, and from the decomposition of waste in landfills.

Moreover, air pollutants are substances in the air that can have adverse effects on human health and the environment. SO2, NO2, and CO are all air pollutants that can cause respiratory problems and other health problems.

Source: ForumIAS