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← GeographyWhich water mass modification results within subtropical gyres?
A)Increased salinity due to high evaporation✓
B)Decreased nutrient concentration from upwelling
C)Elevated temperature due to polar influence
D)Reduced dissolved oxygen from phytoplankton blooms
💡 Explanation
Increased salinity results because high solar radiation causes enhanced evaporation in these regions; this process concentrates salts via the mechanism of surface evaporation. Therefore, salinity increases, rather than nutrient declines or temperature shifts occurring, which are driven by different oceanic processes.
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