Air Quality & Pollution Control Sources, Types & Distribution of Air Pollutants page 16 Solvent vapour is an important part of photochemical pollution (see photochemical smog). Stack emissions. The emission of waste gases. fumes, vapours and smokes to the atmosphere are usually by the use of a smoke stack or chimney. FACT SHEET Ozone and Air Pollution WHAT IS OZONE? Ozone, a gas, is a form of oxygen. In the Earth's upper atmosphere ozone plays an important and beneficial role by providing a shield from the sun's ultraviolet rays. Ozone at ground level is a harmful air pollutant. WHAT CAUSES OZONE POLLUTION? Tailpipe emissions from automobile traffic are the. Carbon dioxide, a greenhouse gas, is the main pollutant that is warming Earth. Though living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas.
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