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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 The atmospheric gases of steady concentration (and their proportions in percentage by volume)
- Air - Simple English Wikipedia, the free encyclopedia
Air A fan moves air Air is the Earth 's atmosphere 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 It has mass and weight, because it is matter The weight of air creates atmospheric pressure There is no air in outer space
- 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
- 10 Interesting Things About Air - NASA Climate Kids
Air is mostly gas Air is all around us, but we can’t see it So what is air, exactly? It’s a mixture of different gases The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen
- Air Canada - The Official Website
Buy airline tickets, find cheap airfare, last minute deals and seat sales with Air Canada Book hotels, cars and vacations with Air Canada Vacations
- 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
- 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
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