According to the theory, the Earth's crust is made up of continental and oceanic plates, which move across the surface of the planet, meeting at plate boundaries. Plate tectonics cause volcanic activity, mountain-building, ocean trench formation and earthquakes.
Answer: Trenches, Earthquakes, mountain ranges, Volcanoes, etc.
Explanation: This is a pretty broad question! tectonic plates can rub against each other to create earthquakes. Many other natural occurrences can happen because of tectonics shifting!
