The term "reducing atmosphere" for the early Earth means that the atmosphere
A)was much thinner around the surface of the Earth than now.
B)contained only two or three kinds of gases.
C)contained little or no free oxygen.
D)contained little or no free nitrogen.
E)contained little or no carbon dioxide.

Question

Quizplus · Accepted Answer

A reducing atmosphere is characterized by the absence or scarcity of free oxygen, which allows for the presence of gases like methane, ammonia, and hydrogen.

The Term "Reducing Atmosphere" for the Early Earth Means That