____ Occurs When Most of the Material Collapsing to Form

question 50

Multiple Choice

____ occurs when most of the material collapsing to form a protostar has fallen into a disk around the star,and a strong wind from the warm protostar ejects material from its poles.

• A) An emission nebula
• B) Hydrostatic equilibrium
• C) The proton-proton chain
• D) The thermonuclear fusion of hydrogen
• E) A bipolar flow

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