Answer:
Convection currents
Explanation:
Convection currents are defined as the vertical movement of heat or moisture(energy) from one location to another primarily due to the temperature changes within the substance. Some of the examples of convection current may include boiling water, convection currents in the atmosphere and in the ocean, weather changes, campfires, etc. Thus, the air that moves in huge circular patterns as a result of temperature differences is known as convection currents.
<span>Geologists use a tiltmeter to measure the titling of the ground along a fault line. A tiltmeter is a very sensitive instrument known as a inclinometer which is designed to measure very minor changes in the angle of ground or buildings/structures.</span>
History was a driving force behind such migration, since humans tended to move to new territory when they lacked food, shelter, or other resources--meaning that most of the conflicts throughout history have been driven by the same forces that drove migration out of Africa.
Answer: The mantle
(More specifically, the asthenosphere)