Earth was hotter than today during the Hadean for all of the following reasons EXCEPT ________.
A)impacts with other objects added heat to Earth
B)differentiation of the core from the mantle added heat to Earth's interior
C)the Sun was much more luminous than it is today
D)carbon dioxide was more abundant in the atmosphere than it is today

Question

Quizplus · Accepted Answer

The Sun's luminosity was actually lower during the Hadean than it is today, so it did not contribute to the higher temperatures on Earth during that time. The other three options - impacts with other objects, differentiation of the core, and higher levels of carbon dioxide in the atmosphere - all would have contributed to Earth being hotter than it is today.

Earth Was Hotter Than Today During the Hadean for All