Question

what process brings vital nutrients to organisms living in the surface waters of the ocean?
a geostrophic flow
b upwelling
c ekman drift
d downwelling

Explanation:

Upwelling is the process where deep, nutrient - rich ocean water rises to the surface. This brings essential nutrients (like nitrates, phosphates) to surface - dwelling organisms. Geostrophic flow is related to balance of pressure and Coriolis force, Ekman Drift is about wind - driven water movement, and Downwelling is the opposite of upwelling (surface water moving down), which doesn't bring nutrients to the surface.

Answer:

B. Upwelling