Which mineral cycle is most accelerated when coastal upwelling weakens due persistent high-pressure systems?

💡 Explanation

When upwelling weakens, less deep, nutrient-rich water reaches the surface, which reduces primary productivity, leading to soluble phosphate accumulating at the bottom sediment because fewer phytoplankton incorporate it. Therefore phosphate retention increases, rather than calcium dissolution, iron sedimentation or seafloor nitrate reduction, that rely on sustained surface productivity and redox interfaces.

• Which erosion outcome primarily results when exposed granite undergoes chemical alteration?
• Which outcome occurs when rising mantle plumes encounter lithospheric thinning?
• Which process initiates island arc formation when oceanic lithosphere converges?
• Which process governs the formation of fining-upward alluvial successions in sedimentary basins?
• Which jet stream effect results when a strong temperature gradient develops at mid-latitudes?
• Which increased outcome occurs when heavy agricultural irrigation overlies karst?