The first atmosphere of Earth was primarily hydrogen and helium. During this time the core of Earth was not differentiated and thus the magnetosphere had not yet formed. How did the lack of differentiation in Earth’s core most likely affect the transition in atmospheric composition from the first atmosphere to the second?
A. By releasing water vapor from the core into the atmosphere.
B. By magnetically attracting freed metallic elements to the surface.
C. By providing the heat energy that fueled atmospheric chemical reactions.
D. By allowing the solar wind to blow away much of the lighter elemental gases.