Roughly how much more massive was Earth's second atmosphere compared with today's atmosphere?
A) same mass as the present atmosphere
B) 1/10 as massive
C) twice as massive
D) 100 times as massive

Question

Quizplus · Accepted Answer

Earth's second atmosphere, primarily composed of volcanic gases, was significantly more massive than today's atmosphere, estimated to be about 100 times more massive.

Roughly How Much More Massive Was Earth's Second Atmosphere Compared