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← GeographyWhich outcome is enhanced along subduction zones by water introduction?
A)Magma generation triggering explosive volcanism✓
B)Crustal thickening inhibiting magma ascent
C)Isostatic rebound causing reduced melting
D)Trench formation decreasing vent explosivity
💡 Explanation
Magma generation increases during subduction because the **lowering of the mantle's melting point** occurs with the introduction of water from the subducting plate; therefore explosive volcanism appears rather than purely effusive, if water is not introduced.
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