The most common gas in the atmosphere is. A)oxygen (O₂). B)carbon dioxide (CO₂). C)nitrogen (N₂). D)methane (CH₄).

Name: The most common gas in the atmosphere is. A)oxygen (O 2 ). B)carbon dioxide (CO 2 ). C)nitrogen (N 2 ). D)methane (CH 4 ).
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Nitrogen makes up approximately 78% of the Earth's atmosphere, making it the most common gas. Oxygen and carbon dioxide make up only about 21% and 0.04% respectively. Methane, while present in the atmosphere, is a much rarer gas than nitrogen.

The Most Common Gas in the Atmosphere Is