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20 votes
Which of the following is not a greenhouse gas?

A Carbon dioxide
B Helium
C Methane
D Water vapor

User Zack Tarr
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1 Answer

6 votes

Answer:

The answer is B

Explanation: Greenhouse gases must be able to change their vibrational state in order to absorb infrared radiation or heat. SO therefore helium is not one of them.

Hope this helps:)

User Chech
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