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← GeographyWhich global effect results when increased glacial meltwater enters subglacial stream systems?
A)Accelerated glacial basal sliding velocity✓
B)Enhanced thermohaline circulation stability
C)Decreased stream sediment deposition rate
D)Reduced oceanic carbon dioxide uptake
💡 Explanation
Increased meltwater enhances lubrication at the glacier bed via regelation, accelerating glacial basal sliding velocity because the added water pressure weakens friction. Therefore, glacial velocity increases, rather than decreased sedimentation or thermohaline changes under typical conditions.
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