Question

"almost all tectonic activities occur along the plate boundaries'' elucidate in four points.

Answer 1

this is because most of the movement occur at the plate boundaries..
plate boundaries are most motile.
they are the break of the land and thus a simple movement causes huge devastation
plate boundaries have a great deal of volcanic eruptions roo

Answer 2

-plate boundaries are the result of the magma current that flows in the uppar mantle of the earth.
-At the upward limbs of current divergent plate boundaries occurs and at downward limbs of currents convergent boundaries takes place.
-when this movement of current overcomes the frictional force at the crack of the plate boundaries ,then it suffers from the tectonic activities like earth quake,formation of crust etc.