________ Occurs When Most of the Material Collapsing to Form

question 127

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 outflow