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  1. May 3, 2024 · Learn about the mixture of gases that comprise the Earth's atmosphere, their proportions, and their effects on life and climate. Explore the history and applications of air locks, devices that permit passage between regions of differing air pressures.

    • The Editors of Encyclopaedia Britannica
  2. Learn the various meanings and uses of the word air as a noun and a verb, with synonyms, examples, and etymology. Find out how air can refer to the gas mixture, the atmosphere, the melody, the broadcast, and more.

  3. Oct 19, 2023 · Learn about the composition, properties, and effects of air, the invisible mixture of gases that surrounds Earth. Find out how air supports life, affects climate, and is used in various ways by humans and other organisms.

  4. AIR meaning: 1. the mixture of gases that surrounds the earth and that we breathe: 2. the space above the…. Learn more.

  5. Apr 5, 2023 · From director Ben Affleck comes AIR. Exclusively in theaters April 5, 2023. #AIRMovieFollow @AIRMovie on Social:Twitter: https://twitter.com/airmovieInstagra...

    • 2 min
    • 14.3M
    • Amazon MGM Studios
  6. 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 . Earth's atmosphere is composed of about 78 percent nitrogen, 21 ...

  7. Columbus air quality is generally clean. In 2019, Columbus air quality index (AQI) averaged an annual score of 37 or “good.”. The US Environmental Protection Agency (EPA) describes “good” air quality as air that generally poses little to no health risk. Similar “good” ratings have been achieved each year in Columbus since 2012.

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