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

question 56

Multiple Choice

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.

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