How do ocean currents work

These currents are on the ocean's surface and in its depths, flowing both locally and globally. Winds, water density, and tides all drive ocean currents. Coastal and sea floor features influence their location, direction, and speed. Earth's rotation results in the Coriolis effect which also influences ocean currents.

Explanation:

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answer; i believe that the correct answer is (the explosion of a nearby star(supernova);