| A | B |
|---|
| particulate | tiny soilds suspended in the air |
| acid precipitation | this happens when water in the atmosphere reacts with carbon dioxide |
| greenhouse effect | the trapping of radiated heat by gases in the atmoshpere |
| greenhouse effect | raises the average global temperature about 35*c |
| particulate | pieces of ash, dust, and soot from burning organic matter |
| cancer | particulates in the air have been linked to this |
| photochemical smog | nitrogen dixoide (NO2) is an example of this |
| ice core | long cylinders of ice that are drilled and removed from deep within a sheet of polas ice |
| pollutants | harmful materials that enter the environment |
| radon | forms when radium breaks down |
| chlorfluorocarbons (CFCs) | compounds of carbon, chlorine, and fluorine ince used in the refigerators, air conditions, aerosol cans, and in the production of styrofoam |
| oxide | common ones include oxygen and carbon, sulfur, or nitrogen |
| global warming | an increased in Earth's average surface temperature caused by an increase in greenhouse effect |
| photochemical smog | a yellow-brown haze formed when sunlight reacts with pollutants produced by cars |
| emphysema | a disease in which tiny aur sacs |
| radon | a colorless, odorless, radioactive gas |
