Answer:
they occur at convergent plate boundaries
In china it as a lot of the worlds population
The nucleolus disappears. Centrioles begin moving to opposite ends of the cell and fibers extend from the centromeres. Some fibers cross the cell to form the mitotic spindle. The nuclear membrane dissolves, marking the beginning of prometaphase.
The three rivers are;
The Satluj Basin
The Ganga Basin
The Brahmaputra Basin