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
flagIndia
33%
12%
12%
40%
62
flagthe United States
37%
12%
15%
34%
32
flagthe United Kingdom
45%
13%
13%
27%
22
flagPoland
52%
3%
18%
24%
3633
flagGermany
20%
20%
40%
20%
15