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← ScienceWhich consequence commonly results when stellar hydrogen drops below threshold?
A)Helium flash core ignition✓
B)Increased CNO cycle dominance
C)Gravitational wave emission spikes
D)Neutrino production rate decreases
💡 Explanation
Helium flash results from core degeneracy, because electron degeneracy pressure halts gravitational contraction. Therefore, helium fusion ignites, caused by rapid triple-alpha process, rather than stable hydrogen fusion due to the increased temperature.
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