The pangaea theory supports the theory of plate tectonics because
it is based on the idea that there were several land masses when earth was first created
it is based on the idea that all the present continents were one supercontinent
it does not require scientists to support the notion that earth's plates can move
one day, earth will have one large land mass again

The Pangea theory supports the theory of plate tectonics because it is based on the idea that all the present continents were one super-continent. For reasons still unknown, the super-continent got separated and created separate smaller continents. This theory also supports the fact that this movement will continue until the day arrives when all the smaller continents will again merge in a different configuration to create another super-continent. 

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall

Then the answer would be d then