Which mechanism causes increased phytoplankton productivity due to upwelling circulation?

💡 Explanation

When upwelling occurs, nutrient transport to surface waters is driven by the upward movement of cold, nutrient-rich water, fostering phytoplankton growth. Therefore nutrient transport results, rather than radiation penetration, temperature instability, or carbon dioxide absorption, which are secondary or unrelated effects.

• Which outcome occurs when vegetation removal destabilizes dunes?
• Which mechanism causes crustal thickening when thrust faulting occurs in collisional mountain belts?
• Which mechanism causes the ITCZ rainy season to shift seasonally across equatorial Africa?
• Which event strongly promotes accelerated karst topography development?
• Which process dominates within a high-altitude cirque basin experiencing repeated freeze-thaw cycles?
• Which outcome occurs when wave action undermines a coastal arch, forming offshore stacks?