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Geography

Which process primarily governs water salinity stratification within a fjord?

A)Density differences from freshwater influx
B)Tidal mixing from constricted geometry
C)Seasonal temperature gradients near surface
D)Wind-driven currents along its length

💡 Explanation

When freshwater from river runoff enters a fjord, lower density causes stratification preventing complete mixing because gravity resists the overturning of denser underlying water resulting in a lens. Density differences, therefore, cause stratification, rather than tidal and thermal effects which homogenize or have lessened effects.

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