Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Geography

The concentration of the following trace gases in the atmosphere in descending order is : 

1
Carbon dioxide, Neon, Helium, Methane
2
Neon, Helium, Methane, Carbon dioxide
3
Helium, Neon, Carbon dioxide, Methane 
4
Methane, Carbon dioxide, Neon Helium
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