- Air | Composition, Oxygen, Nitrogen | Britannica
Air, mixture of gases comprising the Earth’s atmosphere The mixture contains a group of gases of nearly constant concentrations and a group with concentrations that are variable in both space and time
- Air - Simple English Wikipedia, the free encyclopedia
Air can be polluted by some gases (such as carbon monoxide, hydrocarbons, and nitrogen oxides), smoke, and ash This air pollution causes various problems including smog, acid rain and global warming
- Air (disambiguation) - Wikipedia
Air (disambiguation) Look up air in Wiktionary, the free dictionary Air is the name given to the atmosphere of Earth Air or AIR may also refer to:
- Los Angeles, CA Air Quality Index | AccuWeather
Our current air quality index (AQI) provides information on the quality of air that you are breathing and its impact on your health
- AIR Definition Meaning - Merriam-Webster
The meaning of AIR is the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth; also : the equivalent mix of gases on another celestial object (such as a planet)
- Air - National Geographic Society
Air is the invisible mixture of gases that surrounds Earth Air contains important substances, such as oxygen and nitrogen, that most species need to survive
- AIR | English meaning - Cambridge Dictionary
AIR definition: 1 the mixture of gases that surrounds the earth and that we breathe: 2 the space above the… Learn more
- Whats in the Air? - Center for Science Education
Air is a mixture of gases, most of which are naturally occurring Air also contains a significant amount of human-made air pollutants, including some that are not safe to breathe and some that are causing the climate to warm
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