Which process drives the global thermohaline circulation in Earth's oceans?

💡 Explanation

When water masses vary in density due to temperature and salinity, convection occurs because denser water sinks and less dense water rises, driving a global circulation pattern. Therefore density differences are the cause, rather than wind, tides, or seismic activity influencing currents in this context.

• Which outcome occurs when insolation variance reduces subtropical Hadley cell strength?
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• Which pedogenic outcome results when chemical weathering exposes feldspar?
• Which phenomenon causes thermocline deepening in the eastern Pacific Ocean during El Niño events?