State briefly the composition of the atmosphere?
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Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and 0.93% argon. The remainder, less than 0.1%, contains such trace gases as water vapor, carbon dioxide, and ozone.
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The Earth's atmosphere is composed of the following molecules: nitrogen (78%), oxygen(21%), argon (1%), and then trace amounts ofcarbon dioxide, neon, helium, methane, krypton, hydrogen, nitrous oxide, xenon, ozone, iodine, carbon monoxide, and ammonia. Lower altitudes also have quantities of water vapor.
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