Submitted by bastienleblack t3_107isfw in UpliftingNews
WikiSummarizerBot t1_j3ordoi wrote
Reply to comment by Gilgamesh72 in Earth’s ozone layer on course to be healed within decades, UN report finds by bastienleblack
>A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor (H2O), carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and ozone (O3). Without greenhouse gases, the average temperature of Earth's surface would be about −18 °C (0 °F), rather than the present average of 15 °C (59 °F). The atmospheres of Venus, Mars and Titan also contain greenhouse gases.
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