Which risk increases when longshore currents weaken along coasts?

💡 Explanation

Nutrient depletion near the surface increases if longshore currents weaken because upwelling, responsible for bringing nutrient-rich deep water to the surface, is diminished. Therefore, phytoplankton growth slows, therefore nutrient depletion rather than increased plankton or stable oxygen levels occurs in shallower water.

• Which outcome commonly arises when human infrastructure disrupts longshore sediment transport?
• Which outcome occurs when high sediment input overwhelms fluvial transport capacity on a low-gradient plain?
• Which process initiates headwall erosion to form distinct glacial cirques given seasonal freeze-thaw cycles?
• Which mechanism causes increased stream meandering in regions experiencing permafrost thaw?
• Which outcome occurs more rapidly when granitic rock experiences increased jointing?
• Which outcome is facilitated by creep along transform faults?