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- 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 Definition Meaning | Dictionary. com
The terms air or the air is used generally to refer to the sky or open space outside Real-life example: Airplanes and helicopters are designed to fly in the air, meaning the empty space over the ground
- Air - Simple English Wikipedia, the free encyclopedia
Air is a mixture of many gases and tiny dust particles It is the clear gas in which living things live and breathe It has an indefinite shape and volume
- 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
- Whats in the Air? - Center for Science Education
Air is a mixture of naturally occurring gases and human-made air pollutants Learn more about these gases and the role they play in our atmosphere
- Properties of Air - Text Version | Glenn Research Center | NASA
Air is a mixture of gases, 78% nitrogen and 21% oxygen with traces of water vapor, carbon dioxide, argon, and various other components We usually model air as a uniform (no variation or fluctuation) gas with properties that are averaged from all the individual components
- AIR | definition in the Cambridge English Dictionary - Cambridge Dictionary
AIR meaning: 1 the mixture of gases that surrounds the earth and that we breathe: 2 the space above the… Learn more
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