Because of genetic variation

The Buddhist theocracy run by Dalai Lama before it was seized by China :

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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.
Answer:The earth gets hotter because when we travel towards the core which is known as geothermal gradient, the amount of the earth's temperature increases with depth.
Explanation: