As a Main-Sequence Star Burns Its Core Supply of Hydrogen,what

question 60

Multiple Choice

As a main-sequence star burns its core supply of hydrogen,what happens?

• A) Helium begins to fuse throughout the core.
• B) Helium fuses in a shell surrounding the core.
• C) Helium fusion takes place only at the very center of the core,where temperature and pressure are highest.
• D) Helium builds up as ash in the core.

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