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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 one-dimensional change. It is a global increase in temperature caused by an increase in greenhouse gases. These gases form an insulating layer that allows light and heat to pass, but it prevents heat from escaping back into the atmosphere.