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← GeographyWhich mechanism is disrupted when increased freshwater input from glacial melting slows coastal upwelling circulation?
A)Increased surface water density
B)Reduced vertical salinity gradient✓
C)Enhanced thermocline formation
D)Accelerated geostrophic current flow
💡 Explanation
when increased freshwater melts slows coastal zone circulation, reduced vertical salinity gradient disrupts the density-driven sinking because freshwater is less dense, weakening the overall thermohaline processes. Therefore, vertical salinity gradient changes results, rather than density increases or altered thermoclines if density-salinity relationship shift.
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