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← GeographyWhich adjustment occurs when increased glacial meltwater alters stream salinity, affecting thermohaline circulation?
A)Enhanced North Atlantic Deep Water formation
B)Weakened Meridional Overturning Circulation✓
C)Increased coastal upwelling intensity
D)Strengthened subtropical gyre development
💡 Explanation
When increased glacial meltwater reduces stream salinity, buoyancy increases, this reduces density causing reduced sinking in thermohaline circulation, driving the Meridional Overturning Circulation. Therefore weakening results, rather than enhancement, increased upwelling, or stronger gyres that require increased density or wind forcing.
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