The equivalent mix of gases on another celestial object (such as a planet). Existing or living in the air Air, mixture of gases comprising the earth’s atmosphere
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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 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 is the invisible mixture of gases that surrounds earth Air contains important substances, such as oxygen and nitrogen, that most species need to survive. Our recently redesigned site highlights air quality in your local area first, while still providing air quality information at state, national, and world views.
The mixture of gases that surrounds the earth and that we breathe
Of or relating to the air or the movement of air
