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Definition of Global Warming: A gradual increase in the earthâs average surface temperature. Technical term for this: Anthropogenic global warming. Definition of Greenhouse Gas: A gas, like CO2, which traps the sunâs heat.
Global warming is a rise in the average temperature of the Earth. It most often results from increases in green house gases, such as carbon dioxide and methane. These gases trâ¦ap heat energy of the Earth. This raises the temperature of everything on Earth.