Which of the following gases is most abundant in the atmosphere?

Assessment: WAEC SSCE - Geography - 2005 (Objective) Subject: Geography

Question 1 Report

Which of the following gases is most abundant in the atmosphere?
Answer Details
The most abundant gas in the Earth's atmosphere is nitrogen. It makes up about 78% of the air we breathe, while oxygen, the gas we need to survive, only makes up about 21%. Argon is present in very small amounts, about 0.93%, and hydrogen is even less common, at less than 0.1%.
Read lesson note on Physical Geography (JAMB)
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