To answer your question: <span>Why did Earth's early atmosphere lose its hydrogen and helium gases? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ </span> <span>D. The gases were replaced by carbon dioxide from volcanic eruptions.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I hope this helps! If I made a mistake please feel free to tell me ^-^ </span>
B. a volcano that erupts in blasts of the pyroclastic matter. D. would be wrong because the shield volcano can have explosive eruptions but they are generally quiet
