What may have brought an end to the nearly worldwide glacial episode called snowball Earth?
A) Oxygen released by sea-floor volcanism at mid-ocean ridges and hot spots resulted in increased ocean water temperatures.
B) The K-T boundary event took place.
C) There was increased photosynthetic activity by opisthokonts.
D) Carbon dioxide entered the atmosphere from volcanic eruptions.

Question

Quizplus · Accepted Answer

Carbon dioxide entered the atmosphere from volcanic eruptions, which resulted in a greenhouse effect that caused the Earth's temperature to warm up, thus ending the snowball Earth episode.

What May Have Brought an End to the Nearly Worldwide