What was the probable source of gases constituting the early atmosphere?
A) other planets orbiting the sun but close enough to the early earth
B) meteorites
C) volcanoes
D) stromatolites
E) comets

Question

Quizplus · Accepted Answer

Volcanoes are thought to be the probable source of gases constituting the early atmosphere. Early volcanic activity released large amounts of gases such as water vapor, carbon dioxide, nitrogen, and methane into the atmosphere.

What Was the Probable Source of Gases Constituting the Early