Which gases make up the earth’s atmosphere?



  1. 0 Votes

    the atmosphere is 78% Nitrogen and 21% Oxygen; the remaining 1% is composed of trace gases which are mostly unreactive Noble Gases, such as Argon, Helium, Neon and Xenon.

  2. 0 Votes

    Most of the Earth’s atmosphere is made up of Nitrogen, followed by Oxygen. Together, these two elements make up just over 99% of the Earth’s atmosphere by volume. Next are argon (at a little less than 1%) and CO2 (at a little less than 0.1%). Everything else is less than this. As you can imagine, very small percentage changes in composition can have huge effects.

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