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← GeographyWhich outcome follows water inclusion in subducting slabs?
A)Decreased melting point of mantle✓
B)Increased mantle plume formation
C)Reduced seismic activity overall
D)Elevated plate boundary lubrication
💡 Explanation
Introduction of water during subduction lowers the mantle melting point, causing flux melting and magma production because water weakens the intermolecular bonds of rocks. This results in island arc volcanism; therefore melting increases, rather than plume formation caused by mantle upwelling.
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