<prompt> Greenhouse gases are called as such because they -Are used in warming plant growth chambersHelp inmaintaining atmosphereic O2 and CO2 balanceAr produced by green photosynthesizing plants and are trapped in the eahs atmospherePrevent the escape of heat waves reradiated from the eahs surface  <response>: A greenhouse gas sometimes abbreted GHG is a gas that absorbs and emits radiant energy within the thermal infrared range. Greenhouse gases cause the greenhouse effect. The primary greenhouse gases in Eahs atmosphere are water vapor, carbon dioxide, methane, nitrous oxide and ozone. Without greenhouse gases, the average temperature of Eahs surface would be about -18 degC 0 degF, rather than the present average of 15 degC 59 degF. The atmospheres of Venus, Mars and Titan also contain greenhouse gases. Ref : 