| Acid rain | The increase in the acidity of rainfall as a result of pollution. |
| Condensation nuclei | Particles found in the atmosphere, which encourage condensation, by attracting water. |
| Global warming | Un-natural increase in temperature o f the earth's atmosphere, due to pollution. |
| Greenhouse effect | Natural warming of the atmosphere. |
| Insolation | Short wave radiation from the sun. |
| Ozone layer | Layer in the stratosphere where ozone molecules are concentrated. |
| Precipitation | Moisture from the atmosphere in its variety of forms. |
| Stratosphere | Layer found in the atmosphere above the troposphere. |
