what is atmosphere?.. .. .. .. ..
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The layer of air above the earth is called atmosphere. The air in our atmosphere extends upto 300 kilometres above the surface of Earth. The atmosphere contains a tremendous amount of air. ... Atmospheric pressure is the air pressure which is exerted by the weight of air present in the atmosphere.
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❥❥ Aᴛᴍᴏsᴘʜᴇʀᴇ ࿐
An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.
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