Why is Mars' greenhouse effect negligible compared to that of Earth's?
A)Its mass is only one-ninth of Earth's.
B)Greenhouse gas emissions were greatly curtailed according to the International Mars Greenhouse Gas Reduction Treaty of 2003.
C)The Martian atmosphere is much thinner and retains little heat.
D)Martian carbon dioxide contains a rare isotope with little ability to trap heat.

Question

Quizplus · Accepted Answer

The Martian atmosphere is extremely thin, with a surface pressure less than 1% of Earth's atmosphere. As a result, it is unable to retain much heat, making its greenhouse effect negligible compared to Earth's.

Why Is Mars' Greenhouse Effect Negligible Compared to That of Earth's