Question

which characteristic of a cold-water upwelling near the coast of northern california results in a large concentration of marin
a. loss of thermal stability
b. high nutrient concentration
c. consistent surface-current flow rate
d. increased availability of dissolved oxygen

Explanation:

Cold-water upwellings bring deep, nutrient-rich water to the surface. These nutrients (like nitrogen, phosphorus) fuel the growth of phytoplankton, which forms the base of the marine food web, leading to large concentrations of marine life. Other options do not directly drive this high marine biomass: thermal stability loss is a physical change, consistent current rate does not provide food, and dissolved oxygen is not the key driver compared to nutrients.

Answer:

B. high nutrient concentration