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The air around us
| Term | Definition |
|---|---|
| Weather | The condition of Earth's atmosphere at a particular time and place |
| Atmosphere | Earth's envelope of gases |
| Ozone | A form of oxygen that has three oxygen atoms in each molecule instead of the usual two |
| Water Vapor | Water in form of a gas |
| Pollutant | A harmful substance in the air, water, or soil |
| Photochemical Smog | A haze formed when pollutants react with each other in the presence of sunlight |
| Acid Rain | Rain that contains more acid than normal |