Which is a greenhouse gas?
(A) Oxygen
(B) Nitrogen
(C) Carbon-dioxide
(D) Ozone
Correct Answer : Carbon-dioxide
Question Asked : SSC Combined Matric Level (Pre) Exam 1999
Explanation: A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. The primary greenhouse gases in the Earth’s atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone.
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Tags : Biogeography Ecology