If there were no greenhouse effect, Earth's average temperature would likely be
A)near absolute zero.
B)a frigid -18°C.
C)comfortably cooler.
D)warmer than now.

Question

Quizplus · Accepted Answer

The greenhouse effect is what allows Earth to maintain a livable temperature. Without it, much of the heat that Earth receives from the sun would be radiated back out into space, leading to a much colder planet. Scientists estimate that without the greenhouse effect, Earth's average temperature would be about -18°C (-0.4°F).

If There Were No Greenhouse Effect, Earth's Average Temperature Would