Which of the following ecologist gave ‘rivet popper’ hypothesis?
David Tillman
Alexander Von Humboldt
Robert May
Paul Ehrlich
In which part of the biosphere reserves, human settlement is permissible?
Chipko movement was launched for the protection of
One of endangered species of Indian medicinal plants is that of
$A :$ Botanical gardens are ex-situ conservation strategy of plants.
$R :$ National Botanical Garden is situated at Howrah.
The largest endangered bird in India is