Explanation:

Sanctuary : is an area which is of adequate ecological, faunal, floral,
geomorphological, natural or zoological significance. The Sanctuary is declared for the purpose of protecting, propagating or developing wildlife or its environment. Certain rights of people living inside the Sanctuary could be permitted. Further, during the settlement of claims, before finally notifying the Sanctuary, the Collector may, inconsultation with the Chief Wildlife Warden, allow the continuation of any right of any person in or over any land within the limits of the Sanctuary.

Biosphere Reserve are:-
1) Multi-purpose protected areas
2) all plants and animals are preserved in its natural habitat. that is, both the flora and fauna are protected
3) it promotes research in ecological conservation and environment preservation
4) its aim is also to provide facility for education & awareness.

National Park : is an area having adequate ecological, faunal, floral, geomorphological, natural or zoological significance. The National Park is declared for the purpose of protecting, propagating or developing wildlife or its environment, like that of a Sanctuary.