Why is sundarbans known as a Biospher Reserve? When did the Biosphere Reserve in Sundarban start?

Question

Give an account about the Sundarban Biosphere Reserve and its work, aims etc. Also give an account on UNSECO's MAB (Man and Biosphere) Project. Give as much details as possible

Answer 1

http://www.sundarbanbiosphere.org/html_f...

http://www.sundarbanbiosphere.org/

http://en.wikipedia.org/wiki/Sundarbans

http://en.wikipedia.org/wiki/World_Herit...

http://westbengalforest.gov.in/biosphere...