The only factors that doesn't affect surface current from the question is B:
density.
- Surface currents can be regarded as current that is been formed as a result of Earth's rotation as well as changes in temperature.
- Surface currents is know as one of the determinant for climate.
- These currents is responsible for the bringing of warm water from the equator then transfer it to the cooler parts of the ocean as a result of this heat energy is transferred.
- Some factors that influence surface current are;
- Coriolis effect : This also aid the movement of the current
- continental deflection : this helps the deflection of the currents from the continental land masses.
- wind : without wind there cannot be transfer of the warm water from the equator to the part of the ocean that is cool.
Therefore, Option D is correct because density does affect the surface current.
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