Biosphere reserves differ from national parks and wildlife sanctuaries because of the former.
A
human beings are not allowed to enter
B
people are an integral part of the system
C
plants are paid greater attention than the animals
D
living organisms are brought from all over the world and preserved for posterity
Correct option is B. people are an integral part of the system
A biosphere reserve is a term given to an area for the conservation of the resources of the biosphere and for the improvement of the relationship between man and the environment.Humans become an integral part of the system for both research and education purposes.
So, the correct option is 'people are an integral part of the system'.