Part Pf the Current Atmosphere of Earth Is Believed to Be

Multiple Choice

Part pf the current atmosphere of Earth is believed to be

A) the remnants of the original gas from the solar nebula attracted by the protoplanet.
B) the result of the melting and vaporizing of the glaciers during the last ice age.
C) composed primarily of hydrogen and helium.
D) composed of gases that were baked from the rocks sometime after the planet formed.
E) the result of a collision between the sun and another star.