Answer the following questions in about 30 words.
(i) What were the forces suggested by Wegener for the movement of the continents?
(ii) How are the convectional currents in the mantle initiated and maintained?
(iii) What is the major difference between the transform boundary and the convergent or divergent boundaries of plates?
(iv) What was the location of the Indian landmass during the formation of the Deccan Traps?