Among 'The Evil Quartet', which one is considered the most important cause driving extinction of species?
Co-extinctions
Habitat loss and fragmentation
Over exploitation for economic gain
Alien species invasions
More than $70\; \%$ of world's freshwater is contained in
The species area relationship is a straight line described by the equation
Plants like Aegle marmelos, Ocimumsanctum and Ficus religiosa are a group of plants designated as
The largest Tiger reserve in India is
$A :$ Botanical gardens are ex-situ conservation strategy of plants.
$R :$ National Botanical Garden is situated at Howrah.