Drainage — Social Science STD 9 — Question

When the Ganga flows towards West Bengal, it splits into two the Bhagirathi-Hooghly (a distributary) flows southwards through the deltaic plains to the Bay of Bengal. The main stream flows southwards into Bangladesh and is joined by the Brahmaputra, thus resulting in the formation of a delta. The delta formed by these rivers is known as the Sundarban Delta. The Sundarban Delta derived its name from the Sundari tree which grows well in marsh land. It is the world's largest and fastest growing delta.