Which among the following is the most abundant Green-House-Gas(GHG) in the earth’s atmosphere?

Q. Which among the following is the most abundant Green-House-Gas(GHG) in the earth’s atmosphere?
Answer: Water Vapour
Notes: Water vapour also accounts for the largest percentage of the greenhouse effect, between 36% and 66% for clear sky conditions and between 66% and 85% when including clouds.

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