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Earth & Natural Systems

A massive influx of freshwater from melting glaciers into the North Atlantic alters seawater density; which consequence follows?

A)Upwelling intensification along coastal margins
B)Enhanced formation of sea ice extent
C)Weakening of thermohaline circulation sinking
D)Increased salinity in surface ocean currents

💡 Explanation

Thermohaline circulation relies on density differences; therefore, freshwater input reduces the density of surface water, hindering the density-driven deep water formation and the sinking of water masses because it reduces the salinity contrast, rather than enhancing it.

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