Write a short note on the following
1. national parks
2. biosphere reseves
3.sanctuaries

Differences between Wildlife Sanctuary, Biosphere Reserves and National Parks

Wildlife SanctuaryBiosphere Reserves  

National Parks

It is a natural habitat, owned by the government or private agency, that safeguards a particular species of birds and animalsA reserved area of land established by the government to protect the environment as a wholeNotified areas that cover a larger area of land which may cover multiple National Parks, Sanctuaries, and reserves as well.

Animals, birds, insects, reptiles, etcMeant to preserve the biodiversity of a specified areaFlora, fauna, landscape, historical objects, etc

Restrictions are less and open to visitations by the general publicA typical biosphere reserve is divided into the following

Core (no human activity is there),

Buffer (limited human activity is permitted),

Manipulation zone (several human activities can occur in this zone).

Highly restricted, random access to the general public is not allowed

Not requiredSubject to the particular area of the biosphere reservePermission is required

International Union for Conservation of Nature (IUCN) has defined  it as a Category IV type of protected areasIt is internationally recognized within the framework of UNESCO’s Man and Biosphere (MAB) program and nominated by national governments.International Union for Conservation of Nature (IUCN), and its World Commission on Protected Areas, has defined it as a Category II type of protected areas

Explanation:

the denominator has a very specific role.