Final answer:
Most earthquake and volcanic activity occurs at plate boundaries, where tectonic plates interact, as a result of plate tectonics.
Step-by-step explanation:
True. Most earthquake and volcanic activity occurs at plate boundaries, where tectonic plates interact, as a result of plate tectonics. These boundaries include convergent boundaries, where plates collide, divergent boundaries, where plates move apart, and transform boundaries, where plates slide past each other. At these boundaries, the movement and interaction of the plates create stresses and fractures in the Earth's crust, leading to earthquakes and volcanic activity.
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