Surface Currents: current near the surface of the ocean, Gulf Stream is an example of this current, caused by wind (heat from the sun), can change direction due to continental deflection, is curved due to the rotation of the Earth, Deep Ocean Currents: caused by differences in density, convection currrent, differences in salinity of water, is usually very cold and very salty, this current causes upwelling (bringing nutrient rich water from the bottom of the ocean), Both: Provide a home for the biosphere, streamlike movement of water in the ocean, transports matter, transports energy, impacts climate,

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