What ia difference between biosphere reserve …

Wild life sanctuaries:  The natural area where wildlife is protected and preserved is called wildlife sanctuary. These places provide suitable living conditions to the wild life. Killing, poaching, or capturing of wildlife animals is strictly prohibited in the wildlife sanctuaries. These places mainly consist of landscapes, mountains forests and broad leaf forests with limited human activities being permitted in the sanctuary.
Example: Pachmarhi wildlife sanctuary (M.P), Kaziranga National Park (Assam), Gir National Park and Sanctuary (Gujarat).
 
Biosphere reserves: Biosphere is that part of the earth in which the living organisms live or that part of the earth which supports life.  Biosphere reserve areas are meant for conservation of biodiversity of a specific area. The entire flora and fauna in these regions is preserved in its natural habitat.  It also helps in the maintenance of biodiversity culture. These regions permit limited economic activities in them (sand and stone mining) and help to promote research in ecological conservation and environment preservation.
Example: Pachmarhi Biosphere reserve (M.P), Sunderbans Biosphere reserve (West Bengal), Gulf of Mannar Biosphere Reserve (Tamil Nadu)