Terms : Hide Images
| 6290146200 | Air pollution | 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 alter ecosystems. | 0 | |
| 6290146201 | Particulate matter | Solid or liquid particles suspended in air; also known as particles and particulates. | 1 | |
| 6290146202 | Haze | A slight obscuration of the lower atmosphere, typically caused by fine suspended particles. | 2 | |
| 6290146203 | Photochemical oxidant | A class of air pollutants formed as a result of sunlight acting on compounds such as nitrogen oxides. | 3 | |
| 6290146204 | Ozone | A secondary pollutant made up of three oxygen atoms bound together. | 4 | |
| 6290146205 | Smog | A type of air pollution that is a mixture of oxidants and particulate matter. | 5 | |
| 6290146206 | Photochemical smog | Smog that is dominated by oxidants such as ozone. (AKA Los Angeles Smog or Brown Smog) | 6 | |
| 6290146207 | Sulfurous smog | Smog dominated by sulfur dioxide and sulfate compounds. (AKA London Smog or Gray Smog) | 7 | |
| 6290146208 | Volatile Organic Compounds | An organic compound that evaporates at typical atmospheric temperatures. | 8 | |
| 6290146209 | Primary pollutant | A polluting compound that comes directly out of the smokestack, exhaust pipe, or natural emission source. | 9 | |
| 6290146210 | Secondary pollutant | A primary pollutant that has undergone transformation in the presence of sunlight, water, oxygen, or other compounds. | 10 | |
| 6290146211 | Thermal inversion | A situation in which a relatively warm layer of air at mid-altitude covers a layer of cold, dense air below. | 11 | |
| 6290146212 | Inversion Layer | The layer of warm air that traps emissions in a thermal inversion. | 12 | |
| 6290146213 | Asbestos | A long, thin, fibrous silicate mineral with insulating properties, which can cause cancer when inhaled. | 13 | |
| 6290146214 | 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. | 14 |
