Question

The main gases in the troposphere by
volume are
a) hydrogen 30%, oxygen 21%, argon
0.93%; carbon dioxide 0.03%
(B) hydrogen 20%; oxygen 60%, argon,
0.93%; carbon dioxide 0.03%
(C) nitrogen 78%; oxygen 21%, argon
0.93%; carbon dioxide 0.03%
(D)
none of these​

Answer 1

Explanation:

nitrogen 78%; oxygen 21%, argon

0.93%; carbon dioxide 0.03%