Terms : Hide Images
| 4078011730 | air pollution | the introduction of chemicals, particulate matter, or microorganisms into the atmosphere at high concentrations high enough to harm plants, animals, and materials such as buildings, or to alter ecosystems | 0 | |
| 4078011731 | particulate matter (PM) | solid or liquid particles suspended in air; also known as particles and particulates | 1 | |
| 4078011732 | photochemical oxidants | a class of air pollutants formed as a result of sunlight acting on compounds such as nitrogen oxides | 2 | |
| 4078011733 | smog | smoke and fog | 3 | |
| 4078011734 | photochemical smog | smog dominated by oxidants such as ozone | 4 | |
| 4078011735 | volatile organic compounds (VOCs) | an organic compound that evaporates at typical atmospheric temperatures | 5 | |
| 4078011736 | primary pollutants | a polluting compound that comes directly out of the smokestack, exhaust pipe, or natural emission source | 6 | |
| 4078011737 | Los Angeles-type smog | aka brown smog; a type of photochemical smog | 7 | |
| 4078011738 | sulfurous smog | smog dominated by sulfur dioxide and sulfate compounds | 8 | |
| 4078011739 | London-type smog | aka gray smog; a type of sulfurous smog | 9 | |
| 4078011740 | secondary pollutants | a primary pollutant that has undergone transformation in the presence of sunlight, water, oxygen, or other compounds | 10 | |
| 4078011741 | thermal inversion | a situation in which a relatively warm layer of air at mid altitude covers a layer of cold, dense air below | 11 | |
| 4078011742 | Inversion layer | the layer of warm air that traps emissions in a thermal inversion | 12 | |
| 4078011743 | chlorofluorocarbons (CFCs) | a family of organic compounds whose properties make them ideal for use in refrigeration and air conditioning | 13 | |
| 4078011744 | asbestos | a long, thin fibrous silicate mineral with insulating properties, which can cause cancer when inhaled | 14 | |
| 4078011745 | 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 | 15 |
