Which outcome is directly enhanced after prolonged volcanic ash dispersal on a stable upwelling zone?

💡 Explanation

Marine primary productivity increases because volcanic ash provides iron, fueling phytoplankton growth via nutrient fertilization. This fertilization effect enhances the food web in the upwelling zone, rather than decreasing density or changing stratification.

• Under what circumstance would significant overwash initiate barrier island migration?
• Which geographic effect amplifies incoming solar radiation at Earth's poles?
• Which deformation regime results from differential cooling lava?
• Which mechanism primarily contributes to the steep walls observed surrounding fjords?
• Which directional change characterizes air masses crossing latitudes?
• Which outcome results when subsidence occurs unevenly beneath a levee during a prolonged drought?