An important river of the indian subcontinent ?

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics? he proposed that plates carry parts of the seafloor. he theorized that pieces of earth move for a limited time. he suggested that the asthenosphere is broken into segments. he observed seafloor cracks similar to existing cracks in the continents.

At which point on the diagram do convection currents occur to drive plate movement?

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand