| A | B |
|---|
| atmosphere | the thin layer of gases that surround the Earth |
| cholorofluorocarbons (CFCs) | human-made chemical compounds restricted in use because they destroy ozone. |
| climate | the average weather in an area over a long period of time. |
| global warming | the predicted increase in the average temperature of the Earth. |
| greenhouse effect | process by which heat is trapped in the atmosphere by greenhouse gases |
| greenhouse gases | the gases (water vapor, Carbon dioxide, CFCs, methane and nitrous oxide) in the atmoshpere that trap heat. |
| ozone | form of oxygen with molecules made of three oxygen atoms. |
| stratosphere | one of the five layers of the atmosphere, above the troposhere. |
| troposphere | one of the five layers of the atmosphere, from the Earth's surface to 10km above the surface. |
| weather | conditions in the atmosphere at a particular place and moment. |
| meteorology | the study of the atmosphere and weather |
