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← GeographyWhich phenomenon results when fluids lower mantle viscosity?
A)Increased rates subduction zone volcanism✓
B)Elevated transform fault earthquake frequency
C)Reduced continent-continent collision orogeny
D)Accelerated seafloor spreading ridge creation
💡 Explanation
Increased fluid presence lowers mantle viscosity, promoting easier magma ascent via flux melting therefore stimulating volcanism above subduction zones, rather than increased faulting; different plate boundaries constrain outcomes under stress.
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