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← GeographyAt what temperature does lava viscosity reduce to cause accelerated lateral lava flow rates?
A)Silica polymerization threshold exceeded✓
B)Yield strength surpasses dynamic pressure
C)Isothermal compressibility approaches zero
D)Rayleigh-Bénard convection cells saturate
💡 Explanation
Silica polymerization controls magma viscosity; therefore, as temperature rises and this threshold is met, polymerization decreases because silicate chains depolymerize, rather than any pressure overcoming the material's rigidity or any saturation point within convection.
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