Final answer:
Ocean upwelling is the process that carries colder, nutrient-rich water upward to a more shallow depth.
Step-by-step explanation:
Ocean upwelling is the process that carries colder, nutrient-rich water upward to a more shallow depth. It occurs when prevailing winds blow along surface waters near a coastline, causing water from the ocean bottom to move up to the surface.
This process brings up nutrients from the ocean depths, recycling them and making them available for reuse by other living organisms.