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Which one of the following gases is placed second in respect of abundance in the Earth’s atmosphere?
Oxygen
Hydrogen
Nitrogen
Carbon dioxide
The atmosphere is composed of ~78% nitrogen and ~21% oxygen, with small amounts of other gases. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.
By: Munesh Kumari ProfileResourcesReport error
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