The global air convection current between the equator and the poles is caused by the Coriolis effect. Option D is correct.
What is the Coriolis effect?
- It is the deflection air current that is not firmly attached to the earth's surface. It occurs due to the difference in the relative speed of air and earth rotation.
- The air heats more in the equator than that of the poles hence air moves from the equator to the poles.
- But due to the Coriolis effect, the air move in a curved path instead of a straight one.
Therefore, the global air convection current between the equator and the poles is caused by the Coriolis effect.
Learn more about the Coriolis effect:
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