Which risk increases when major ocean gyres stagnate?

💡 Explanation

Anoxic zone size risk increases due to decaying organic matter. Stagnation reduces oxygen replenishment because the biological pump mechanism falters; therefore, decomposition depletes dissolved oxygen rather than gyre circulation mitigating such depletion, under typical conditions.

• Which consequence results when rapid glacial retreat occurs?
• Which outcome results when arid zone topsoil experiences prolonged deflation?
• Which distribution pattern results when coastal upwelling intersects with a subtropical gyre system?
• Which mechanism most directly enhances stream downcutting into bedrock in humid temperate climates?
• Which process primarily causes the rounded shape of cirque basins after glacial retreat?
• Which effect accelerates downslope movement via solifluction in high-latitude permafrost regions?