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What are the main gasses?
Oxygen
Nitrogen
Helium
Neon
How much percentage does nitrogen contain in the atmosphere?
78.08%
78%
70%
79.08%
How much percentage does other gasses contain in the atmosphere?
0.01
0.4
0.1
0.20
How much percentage does oxygen contain in the atmosphere?
20.24%
20.84%
20%
30%
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