World geography anchoring Peru coastal fisheries what ocean condition commonly worsens nutrient upwelling during strong El Niño episodes off western South America?
Q1. World geography anchoring Peru coastal fisheries what ocean condition commonly worsens nutrient upwelling during strong El Niño episodes off western South America?
Answer: Warmer surface waters damp favorable upwelling
Explanation: During strong El Niño events, anomalously warm surface waters off Peru suppress cold upwelling by deepening the thermocline, reducing nutrient supply to surface waters and causing collapse of fish populations.