Answer Different processes that occur along the plate boundaries
Explanation
Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries (or faults). The relative movement of the plates typically ranges from zero to 100 mm annually. Wikipedia › wiki › Plate_tectonics Plate
When tectonic plates shift they can sometimes form volcanoes because the plate begins to melt the mantle above, and the melted rock rises through the plate
