Explanation:

 Biosphere reserves are areas of terrestrial and coastal ecosystems promoting solutions to reconcile the conservation of biodiversity with its sustainable use. They are internationally recognized, nominated by national governments and remain under sovereign jurisdiction of the states where they are located. Biosphere reserves serve in some ways as 'living laboratories' for testing out and demonstrating integrated management of land, water and biodiversity. Collectively, biosphere reserves form a world network: the World Network of Biosphere Reserves (WNBR). Within this network, exchanges of information, experience and personnel are facilitated.

Wildlife Sanctuaries are defined as a space which is set aside exclusively for the use of wild animals, who are protected. Wildlife sanctuaries are also referred to as wildlife refuges in some areas. These wildlife sanctuaries are managed by the Government where rangers or authorized employees patrol the area to ensure that no one hunts or otherwise harasses the animals.
National park is a park officially recognised by a nation's government. National parks are often made to protect the animals that live inside them or the land itself