Radiation arriving from the Sun consists mostly of?

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1. Radiation arriving from the Sun consists mostly of?

Visible light only

Visible light plus long-wavelength infrared

Visible light plus short-wavelength infrared

Both short- and long-wavelength infrared, in equal measure

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The Sun, being extremely hot, radiates mostly visible light along with some ultraviolet and short-wavelength infrared — very different from the longer-wavelength infrared that a much cooler Earth re-radiates.