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If the greenhouse effect did not exist, the average temperature of Earth would be -18C So it's more correct to say that without the greenhouse effect, life wou

If the greenhouse effect did not exist, the average temperature of Earth would be -18C So it's more correct to say that without the greenhouse effect, life would never exist on Earth, because plant life most certainly wouldn't develop in -18C and saturate the planet with oxygen.

ballenf 9y ago
Can there not be more than one parallel requisite for life to exist? Like the presence of the moon, distance from the sun, etc.