Greenhouse Gas
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- Any gas that absorbs infrared radiation in the atmosphere. Greenhouse gases include water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), halogenated fluorocarbons (HCFCs), ozone (O3), perfluorinated carbons (PFCs), and hydrofluorocarbons (HFCs). See carbon dioxide, methane, nitrous oxide, hydrochlorofluorocarbons, ozone, hydrofluorocarbons, perfluorocarbons, sulfur hexafluoride.
EPA - Cite This Source - This Definition - Carbon tetrachloride, Chlorofluorocarbons, Fluorocarbons, Freon, Greenhouse Gas (GHG), Halocarbons, Halons, Hydrochlorofluorocarbons (HCFCs), Hydrofluorocarbons (HFCs), Methyl bromide (CH\<sub\>3\</sub\>Br), Montreal Protocol on Substances that Deplete the Ozone Layer, Ozone Depleting Substance (ODS), Perfluorocarbons (PFCs)