Q492
The most abundant gases in the earth's atmosphere by volume are:
A.
Carbon dioxide and nitrogen
B.
Oxygen and water vapor
C.
Nitrogen and oxygen
AnswerD.
Oxygen and helium
E.
Oxygen and ozone
Answer: Option C
Solution
Answer: Option C
Solution:
The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.