Webair 2 of 2 verb aired; airing; airs transitive verb 1 : to expose to the air for drying, purifying, or refreshing : ventilate often used with out He opened the windows to air out the room. 2 : to expose to public view or bring to public notice aired their complaints 3 : to transmit by radio or television air a program intransitive verb 1
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WebAir 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.
WebAir is a protective cushion. On Earth, we’re pretty lucky to have an atmosphere filled with air. The air in our atmosphere acts as insulation, keeping the Earth from getting too cold or too hot. Ozone, another type of gas in the air, also protects us from too much sunlight. Air in the atmosphere can also protect us from meteoroids.
WebAir is the invisible mixture of gases that surrounds Earth. Air contains important substances, such as oxygen and nitrogen, that most species need to survive. Human beings ( Homo sapiens ), of course, are one of those species. Sometimes, the word " atmosphere " is used instead of the word "air."
WebThe primary component of air is nitrogen gas. Nitrogen, oxygen, water vapor, argon, and carbon dioxide account for about 99% of the composition of air. Trace gases include neon, methane, helium, krypton, hydrogen, xenon, ozone, and many other elements and compounds.
Webairs plural a display of emotion or behavior that is insincere or intended to deceive ever since she joined the country club she's been putting on airs of being too "high society" for us ordinary folks Synonyms & Similar Words act pretense facade show front charade semblance guise pose masquerade appearance disguise playacting performance pretence
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WebAir also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere. Air composition, temperature, and atmospheric pressure vary with altitude. Within the atmosphere, air suitable for use in photosynthesis by terrestrial plants and breathing of terrestrial animals is found only in Earth's troposphere.