Question

choose the correct answer. which atmospheric gas is being described? a noble gas (non - reactive), makes up approximately 1% of the atmosphere, third most common gas in air methane hydrogen oxygen argon

Explanation:

Argon is a noble gas, non - reactive, makes up about 1% of the atmosphere and is the third most common gas in air. Methane is a greenhouse gas and not a major component of air. Hydrogen is not a major part of the atmosphere. Oxygen is reactive and the second most common gas in air.

Answer:

D. argon