Question

If the earth did not have an atmosphere, would its average surface temperature be higher or lower

Answer 1

Earth's atmosphere traps heat from the Sun and keeps it near the surface, warming the planet and sustaining life on Earth. The atmosphere lets some of the Sun’s radiation in, but it doesn’t let all of it return. Visible sunlight passes through our transparent atmosphere to warm the land and oceans, and some of this heat is re-radiated in infrared form. The longer infrared rays are less energetic than visible ones and do not slice through the atmosphere as easily as visible light. The warming by heat-trapping gases in the air is popularly known as the “greenhouse effect” whose influence is actually a matter of ‘life and death’.

I sure also there will be high temperature

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