Maximum portion of atmosphere on Earth is : February 20, 2021February 20, 2021 administrator Maximum portion of atmosphere on Earth is :NitrogenWellDone! Your Selected answer is Correct. Please continue to expand your knowledge with Online Latest MCQs WebsiteOxygenCarbonNone of the above Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Like this:Like Loading...