The equivalent mix of gases on another celestial object (such as a planet). 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 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.
Of or relating to the air or the movement of air Existing or living in the air Containing or inflated by air.
WATCH
