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← Earth & Natural SystemsA freshwater influx occurs atop a coastal ocean; which consequence follows?
A)Increased surface water salinity
B)Enhanced vertical water mixing
C)Decreased nutrient availability near surface
D)Increased water column stratification✓
💡 Explanation
Freshwater is less dense than saltwater; therefore, increased freshwater at the surface increases density differences between surface and deeper waters. This density gradient enhances stratification, rather than mixing, because the less dense layer resists mixing with denser layers below.
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