Alfred Wegener's theory of continental drift was not well accepted because he could not say what
force could be big enough for the continents to move. Current theories explain this movement
with
a. subduction zones at continental margins
b. hot spots forming under continents
c. magnetic reversals of the north and south poles
d. convection currents in the mantle
Its like currents in the water which is pushing the boat towards another boat or anything in front of it. The currents are pushing the continents towards each other.
