Answer:
atmospheric circulation
Explanation:
Atmospheric circulation occurs because the Sun heats the Earth more at the equator than at the poles.
Warm air is known to rise at the tropics which lies closer to the equator and moves towards the poles. Atmospheric circulation is driven by the rotation of the earth.
The air cools and flows back towards the Equator to be warmed up again. A sort of convection current is thereby set up.
