what are some of the causes of both indoor and outdoor air pollution
Causes and effects of indoor air pollution: Indoor air pollution occurs when certain air pollutants from particles and gasses contaminate the air of indoor areas. These air pollutants can cause respiratory diseases or even cancer.
Sources of Indoor Air Pollution. Indoor air pollution can be caused by tobacco smoke, carbon monoxide or nitrogen oxides from unvented or faulty gas appliances, particles from wood-burning stoves, fireplaces and aerosol sprays, and biological agents, such as pet dander, dust and mold. 1987 EPA study ranked indoor air pollution as the fourth highest cancer risk out of 13 environmental problems. Indoor radon exposure, which is the second-leading cause of lung cancer, was rated the number-one environmental health risk.