Final answer:
The ocean's global conveyor belt is driven by differences in the heat energy balance at different latitudes on Earth.
Step-by-step explanation:
The driving force behind the ocean's global conveyor belt is differences in the heat energy balance at different latitudes on Earth. The circulation system of the ocean plays a crucial role in distributing heat energy and regulating weather and climate. The ocean currents transport warm water from the equator to the poles and cold water from the poles to the equator, balancing the temperature distribution on Earth.