| A | B |
|---|
| pollutants | human activity is a source of this. |
| greenhouse effect | The trapping of gases in atmosphere. |
| Cancer | A disease in which cells grow abnormally and without restraint |
| Radon | Forms when radium breaks down. |
| Ice core | Long cylinders of ice that are drilled and removed from deep from witin a sheet of polar ice. |
| Oxide | Common ones include oxygen and carbon,sulfur,or nitrogen. |
| Chlorofluorocarbons | Compounds of carbon, chlorine, and fluorin once used in refrigerators, air conditioners, aerosol cans,and in the production of styrofoam. |
| Acid precipitation | This happens when water in the atmospher reacts with carbon dioxide. |
| Global Warming | An increase if Earth's temp. caused by an increase in greenhouse gases. |
| Particulate | Tiny solids suspended in the air. |
| Emphysema | A disease if which tiny air sacs in the lungs break down. |
| Photochemical smog | A yellow-brown haze formed when sunlight reats with pollutants produced by cars. |
