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← GeographyWhich event follows explosive eruptions if tephra erosion slows?
A)Lava dome interior pressure increases✓
B)Pyroclastic flow surface viscosity decreases
C)Stratovolcano flank instability intensifies
D)Lahars erode canyon floors extensively
💡 Explanation
Viscous lava accumulates because reduced tephra allows less pressure release; therefore, interior pressure increases, rather than surface viscosity decreasing, which would require compositional change, not just slower erosion. Lahar intensities are independent. Stratovolcano instability has diverse drivers.
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