Geothermal heat- to provide energy for process like subduction, melting and metamorphism (to drive plate tectonics)
solar energy- for processes like erosion, weathering and transport
Answer:
B. Rapid development of technology.
Explanation:
Airplanes were not a thing yet. Railroads were still the main form of transportation at that time.
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.
Answer:
Global address?
Explanation:
Every location on earth has a global address. Because the address is in numbers, people can communicate