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Answer:

Tectonic Plates

Explanation:

Massive rocks under the continents floating on magma slowly float around. When they bang into each other it causes earthquakes

Answer:

plate tectonics

Explanation:

Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements. ... In plate tectonics, Earth's outermost layer, or lithosphere—made up of the crust and upper mantle—is broken into large rocky plates.