What is the third by volume, after nitrogen and oxygen, component of dry air?

carbon dioxide
methane
ozone
argon
Argon makes up 0.934% of the earth's atmosphere. It is more than twice as abundant as water vapor and 23 times as abundant as carbon dioxide.
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Answers by country

carbon dioxide
methane
ozone
argon
answers
flagAustralia
29%
5%
11%
52%
17
flagAustria
33%
0%
25%
41%
12
flagGreece
40%
6%
13%
40%
15
flagthe United States
30%
20%
16%
32%
62
flagthe Philippines
30%
20%
20%
30%
10
flagPakistan
30%
10%
20%
30%
10
flagIndia
44%
10%
14%
29%
135
flagPoland
50%
3%
18%
26%
4219
flagthe United Kingdom
50%
10%
13%
26%
38
flagNigeria
55%
0%
20%
25%
20
flagGermany
37%
10%
29%
17%
79