Conservation of plant diversity is mostly a / an
Aesthetic necessity
Economic necessity
Genetic necessity
Environmental necessity
Explain as to how protection of biodiversity hot spots alone can reduce up to $30 \%$ of the current rate of species extinction.
The fast dwindling $....A... $$\;\%$ forest is estimated to produce $....B... $$\;\%$ percent of the total oxygen in earth’s atmosphere.
An example of ex situ conservation is
Which one of the following pairs of geographical areas show maximum biodiversity in our country ?