Part of the Current Atmosphere of Earth Is Believed to Be

question 51

Multiple Choice

Part of the current atmosphere of Earth is believed to be

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

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