For Air Pollution we have terms and definitions in 14 topics. The topics are Air Quality, Atmospheric Chemistry, Automotive, Climatology, Energy, Environment, Environmental Health, Health, Import Cars, Physical Geography, Sanitation, Satellite Meteorology, Sociology and Weather.

The presence of polluting gases and suspended particles in the atmosphere in excess of air quality standards
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The contamination of the atmosphere by any toxic or radioactive gases and particulate matter as a result of human activity. [Environmental Science and Technology; v28; 1633-1649; Sept 1994.] [New Scientist; v143; 8; 1994.]
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Release of harmful substances into the air due to engine operation and similar causes.
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Airborne gaseous, chemical, or organic matter which pollutes the atmosphere
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Unwanted particles, mist or gases put into the atmosphere as a result of motor vehicle exhaust, the operation of industrial facilities or other human activity./
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The presence of contaminants or pollutant substances in the air that interfere with human health or welfare, or produce other harmful environmental effects.
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The presence of noxious substances in the air that we breathe.
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The presence of noxious substances in the air that we breathe.
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The introduction of impurities and contaminants, many of which are caused by humans, into the atmosphere.
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Toxification of the atmosphere through the addition of one or more harmful substances in the air. Substance must be in concentrations high enough to be hazardous to humans, other animals, vegetation, or materials. Also see primary pollutant and secondary pollutant.
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The general term referring to the undesirable addition to the atmosphere of air pollutants.
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Contaminants present in the atmosphere such as dust, gases or smoke.
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Refers to the contamination of the atmosphere by noxious substances (see also DEPLETION, ENVIRONMENT, and INTENSIFICATION).
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The soiling of the atmosphere by contaminants to the point that may cause injury to health, property, plant, or animal life, or prevent the use and enjoyment of the outdoors.
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