The main reason for the wall's construction had always been defense. Since China's first dynasty, the empire faced a near-constant threat of attack from the nomadic tribes to the north. This included those famed Mongols as well as lesser-known groups like the Xiongnu and the Göktürks.
Answer:
The further the latitude away from 0, the less solar energy distribution.
Explanation:
As you get away from the latitude of zero in a northern or southern direction, the energy distribution will decrease, due to the colder climate as you go south or north.
The atmosphere and Earth's interior are layered by density. Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth's core, at its center, is denser than its crust.
?!!?!???!!?????????!????????????????
