| A | B |
|---|
| Acid precipitation | is rain or any other form of precipitation that is unusually acidic |
| Toxic air pollutants | airborne particles and gases the occur in concentrations high enough to kill organisms |
| Biological contaminants | are or were living organisms. They can cause poor indoor air quality and some can damage surfaces inside and outside the home |
| Carbon monoxide | a colorless, odorless, and tasteless gas |
| Haze | an atmospheric phenomenon where dust, smoke and other dry particles obscure the clarity of the sky |
| Inversion | air temperature increasing with height |
| Kyoto Protocol | international Framework Convention on Climate Change with the objective of reducing greenhouse gases in an effort to prevent anthropogenic climate change |
| Lead | a main element that is a potent neurotoxin that accumulates in soft tissues and bone over time |
| Mixing depth | is the layer between the ocean surface and a depth where the density is about the same as at the surface |
| Particulate matter | tiny particles of solid or liquid suspended in a gas |
| Photochemical reaction | a chemical reaction which is induced by light |
| Primary pollutant | a polluntant that is emitted from an identifiable source |
| Radon | a colorless, naturally occurring, radioactive noble gas that is formed from the decay of radium |
| Secondary pollutant | a polluntant that is produced in the atmosphere by chemical reactions occuring with primary pollutants |
| Smog | a kind of air pollution |
| Temperature inversion | an increase in temperature with height, or to the layer within which such an increase occurs |
| Air pollutants | airborne particles and gasses occurring in concentrations that can be dangerous |
