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← ScienceWhich outcome results during stellar nucleosynthesis within a supergiant star?
A)Iron core collapses gravitationally inward✓
B)Helium flash increases carbon abundance
C)Neutron capture forms heavier isotopes
D)Alpha decay reduces atomic number
💡 Explanation
Gravitational collapse occurs during stellar nucleosynthesis because electron degeneracy pressure can no longer counteract gravity, therefore an iron core implodes rather than fusion continuing to heavier elements because exceeding the iron's binding energy threshold prohibits further exothermic fusion.
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