Which outcome occurs when coastal upwelling exceeds normal limits?

💡 Explanation

Intense upwelling brings excessive nutrients to the surface that can trigger a rapid increase in algae; this is eutrophication because it leads to harmful algal blooms consuming available oxygen, therefore algal blooms intensify, rather than a bloom dying off due to lack up nutrients.

• Which erosional mechanism primarily shapes the steep U-shaped valleys characteristic of Norwegian fjords?
• Which cavern formation results when carbon dioxide concentration lessens?
• Which effect primarily drives airflow deflection in upper-level jet streams within Hadley cells?
• Which outcome reduces arable land when excessive grazing begins?
• Which mechanism causes increased ocean atmospheric CO2 absorption during coastal upwelling events?
• Which thermohaline consequence would increased glacial melt cause?