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the introduction of chemicals, particulate matter, or microorganisms into the atmosphere at concentrations high enough to harm plants, animals, and materials such as buildings, or to alter ecosystems
solid or liquid particles suspended in air; also known as particles and particulates
a class of air pollutants formed as a result of sunlight acting on compounds such as nitrogen oxides
sick building syndrome
a buildup of toxic compounds and pollutants in an airtight space; seen in newer buildings with good insulation and tight seals against air leaks
Volatile Organic Compound (VOC)
an organic compound that evaporates at typical atmospheric temperatures
a polluting compound that comes directly out of the smokestack, exhaust pipe, or natural emission source
Los Angeles-type smog (brown smog)
type of photochemical smog which is dominated by sulfuric oxides (also called sulfurous smog)
smog dominated by sulfur dioxide and sulfate compounds (also called Los Angeles-type smog)
a primary pollutant that has undergone transformation in the presence of sunlight, water, oxygen, or other compounds
a situation in which a relatively warm layer of air at mid-altitude covers a layer of cold, dense air below
a family of organic compounds whose properties make them ideal for use in refrigeration and air-conditioning
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