Final answer:
The global connection current between the equator and the poles is primarily caused by the unequal distribution of solar energy and the Earth's rotation, specifically the Coriolis effect. The equator receives more sunlight, creating a low-pressure area, and cooler air from the poles flows towards the equator along the surface, completing the global circulation pattern.
Step-by-step explanation:
The global connection current between the equator and the poles is primarily caused by the unequal distribution of solar energy on Earth. The equator receives more direct sunlight, leading to warmer air that rises and creates a low-pressure area. As a result, cooler air from the poles flows towards the equator along the surface, creating the global connection current known as the Hadley Cell.
Additionally, the Earth's rotation plays a role in the global connection current through the Coriolis effect. The Coriolis effect causes air to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. This deflection further contributes to the movement of air from the poles towards the equator, completing the global circulation pattern.
In summary, the unequal distribution of solar energy and the Earth's rotation, specifically the Coriolis effect, are the main factors that cause the global connection current between the equator and the poles.
Learn more about causes of the global connection current between the equator and the poles