| A | B |
|---|
| Air pollution | It is when susbstances that can cause harm to living things end up in the air. |
| Air pollutants | The substances that pollute the air. |
| Primary pollutants | A pollutant that is put directly into the air by human activity. |
| Secondary pollutants | Pollutants formed when a primary pollutant comes into contact with other primary pollutants. |
| Ozone layer | It is the thin layer that protects the earth and its inhabitants from the ultra-violent rays. |
| Clean Air Act | It gives the EPA the authority to regulate automobile emissions. |
| Industrial air pollution | Pollution that is generated by industries and power plants. |
| Thermal inversion | It is when the air above is warmer than the air below. |
| Smog | It is the air pollution that hangs over urban areas and reduces visibility. |
| Particulates | smoke, ash, soot, dust, lead, and other particles from burning fuel. |
| VOCs(Volatile organic compunds) | They are organic chemicals that vaporize readily, producing toxic fumes. |
| Sulfur dioxide | It is produced by chemical interactions between sulfur and oxygen. |
| Carbon monoxide | The odorless, colorless, poisonous gas. |
| Sick-building syndrome | It is a building have poor air quality. |
| Asbestos | It is the pollutant that comes from pipe insulations. |
| Radon Gas | It is the invisible, tasteless, and odorless, and radioactive gas. |
| Acid precipitation | It is the highly acidic precipitation(rain, sleet, or snow) that results from the burning of fossil fuels. |
| Acid shock | The sudden influx of acidic water. |
| Tobacco smoke | It is the pollutant that comes from cigarettes and pipes. |
| Formaldehyde | It is the pollutant that comes from furniture, carpeting, particleboard, and foam insulation. |
| Nitrogen oxides | They are the pollutants that come from unvented gas stoves, wooden stoves, and kerosene heaters. |
| Fungi and bacteria | They are the pollutants that come from dirty heating and air conditioning ducts. |
| Radon-222 | It is the pollutant that comes from uranium containing rocks. |
| Gasoline | It is the liquid that when burned, creates a pollutant. |
| Methylene chloride | It is the pollutant that comes from paint strippers and thinners. |
