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trace gases.
Nitrogen
Mars has an atmosphere, though it is different than our atmosphere here on Earth. The atmosphere of Mars is thin, cold, and dry and contains much less oxygen than the atmosphere of Earth. The oxygen content of the Martian atmosphere is only 0.13 percent, compared with 21 percent in Earth's atmosphere. Carbon dioxide makes up 95.3 percent of the gas in the atmosphere of Mars. It also contains nitrogen and argon and very small amounts of water and methane. Additionally, the atmospheric pressure on Mars is only about 1/100 that of Earth's!
they have less density than the atmosphere. u better believe it
The least prominent gas in the atmosphere is xenon. It represents no more than one percent on the air in the atmosphere.
trace gases.
-1psi
Nitrogen
You must be fishing for "water vapor". It varies a lot (the 'humidity'),but can be up to (not 'at least') about 4%.All other constituents of normal atmosphere are either much more ormuch less than than 4% .
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Earth's atmosphere is made up of 78-percent nitrogen, 21-percent oxygen, 0.93-percent argon, and 0.028-percent carbon dioxide. The earth's atmosphere is a very thin layer of these combined gases wrapped around the planet.
Mars has an atmosphere, though it is different than our atmosphere here on Earth. The atmosphere of Mars is thin, cold, and dry and contains much less oxygen than the atmosphere of Earth. The oxygen content of the Martian atmosphere is only 0.13 percent, compared with 21 percent in Earth's atmosphere. Carbon dioxide makes up 95.3 percent of the gas in the atmosphere of Mars. It also contains nitrogen and argon and very small amounts of water and methane. Additionally, the atmospheric pressure on Mars is only about 1/100 that of Earth's!
carbon dioxide
trace elements
White people
Over all the atmosphere, less than 0.0001%.
NO. 0.45% is not less than 0.01 %.