Which risk increases when a coastal development alters surface runoff patterns near an oceanic gyre?

💡 Explanation

Enhanced runoff concentrates nutrients near the gyre because advection distributes increased nitrogen/phosphorus leading to algal blooms and oxygen depletion rather than impacting deep sea corals or upwelling because of gyre influence.

• Which risk increases when urban development reduces floodplain storage behind a natural levee system?
• Which mechanism reduces surface salinity in high-latitude oceans when warming temperatures accelerate glacial meltwater outflow?
• Which risk increases when a coastal Antarctic region experiences increased glacial melt?
• Which process initiates island arc formation when oceanic lithosphere converges?
• Which impact occurs when El Niño's reduced upwelling weakens offshore ecosystems?
• Which outcome occurs when prolonged warming increases active layer depth on a tundra slope subject to solifluction?