| A | B |
|---|
| Primary pollutant | put directly into the air by human activity |
| Secondary Pollutant | formed when a primary pollutant comes into contact with other primary pollutants, or even with naturally occuring substances like water vapor, and a chemical reaction occurs |
| Thermal Inversion | when the air above is warmer than the air below |
| Smog | when air pollution hangs over urban areas and reduces visibility |
| Sick-Building Syndrome | buildings with particularly poor air quality are said to have sick building cells, such as fungi cells building up in the air-tight buildings |
| Acid Precipitation | highly acidic precipitation that results from the burning of fosisl fuels |
| Acid Shock | when acidic precipitation rushes into lakes and bodies of water |
| Air Pollution | when substances that can cause harm to living things end up in the air |
