Water vapor is a natural component of the atmosphere and is not considered a major air pollutant.

Building materials, such as carpets, paints, and adhesives, can release harmful chemicals into the air.

Sulfur dioxide reacts with water vapor in the atmosphere to form sulfuric acid, which contributes to acid rain.

Air purification involves removing pollutants from the air, while air conditioning and ventilation primarily control temperature and humidity.

Allergies are typically caused by exposure to allergens, such as pollen or dust, rather than particulate matter.

Emission reduction involves reducing the amount of pollutants released into the air from a source.

Scented candles can release harmful chemicals into the air, which can contribute to indoor air pollution.

Air quality standards are established to protect public health and the environment from the harmful effects of air pollution.

Nitrogen dioxide is an air pollutant but not a greenhouse gas.

Air quality assessment involves evaluating the levels of air pollutants and their potential effects on human health and the environment.

Natural ventilation, such as opening windows, helps to improve indoor air quality by bringing in fresh air and removing pollutants.

Air quality monitoring involves measuring the levels of air pollutants in the ambient air.

Increasing the number of vehicles on the road would lead to more emissions and worsen air pollution.

Air quality management involves developing and implementing strategies to reduce air pollution and improve air quality.