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  1. 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 …

  2. Air Indiana Flight 216 - Wikipedia

    The Air Indiana Flight 216 crash occurred on December 13, 1977, at 19:22 CST, when a Douglas DC-3, registration N51071 carrying the University of Evansville basketball team, the Evansville Purple …

  3. 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 …

  4. Air - National Geographic Society

    Oct 1, 2024 · 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.

  5. AIR | definition in the Cambridge English Dictionary

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

  6. What's 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 …

  7. Air - definition of air by The Free Dictionary

    1. Of or relating to the air or the movement of air: an air tube. 2. Existing or living in the air; aerial. 3. Powered by compressed air: an air horn. 4. Containing or inflated by air.

  8. 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. It has mass and weight, because it is matter. The …

  9. 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.

  10. Evansville, IN Air Quality Index | AccuWeather

    Our air quality forecast chart breaks down the quality of the air on an hour-by-hour scale, allowing you to visualize the trends in air quality and plan your outdoor activities.