The two factors, Temperature and Pressure, have the greatest influence on the state of each of Earth's layers.
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Earthquakes occur along plat boundaries and faults. Most earthquakes happen along the edge of continental and oceanic plates. Faults are found in the middle of the plates. They're like cracks that form when the different parts of the plates don't move in the same direction.
Different perceptions of a region can make that region less defined is true im not a 100% sure tho
B. Deforestation - Deforestation can take as little as an hour, depending on the size of the forest.
