The chemically inert gas argon's abundance in the Martian atmosphere indicates that in the past the early atmosphere (of other gases)was ____ the atmosphere today.
A) 100 times
B) equal to
C) 1/10
D) 1/100

Question

Quizplus · Accepted Answer

The abundance of argon, a chemically inert gas, suggests that the early Martian atmosphere was much thicker, approximately 100 times the current atmosphere, as argon does not escape easily and its presence indicates the loss of other atmospheric gases over time.

The Chemically Inert Gas Argon's Abundance in the Martian Atmosphere