The greenhouse effect, warming Earth’s atmosphere, is mainly driven by the trapping of which type of radiation?

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1. The greenhouse effect, warming Earth’s atmosphere, is mainly driven by the trapping of which type of radiation?

Ultraviolet rays

Gamma rays

Infrared rays

X-rays

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Earth absorbs mostly short-wavelength solar radiation, then re-emits it as longer-wavelength infrared. Greenhouse gases trap this outgoing infrared, warming the atmosphere.