Which of the Following Is Believed to Form Part of the Current

question 35

Multiple Choice

Which of the following is believed to form part of the current atmosphere of Earth?

• 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 vapourizing of the glaciers from the last ice age
• C) gases that were outgassed from the heated rocks sometime after the planet formed
• D) hydrogen and helium from a collision between the Sun and another star