Wild populations of plants and animals and traditional life styles of tribals are protected in
Biosphere reserve
Sanctuary
National Park
None of these
What is Red Data Book ?
In India, forests constitute about
Silent valley of Kerala is being preserved because it has
Exotic species Eichhornia crassipes
$-1{ }^{\circ} C , 13^{\circ} C$ annual variations in the intensity and duration of temperature and $50$ and $250 \;cm$ annual variation in precipitation, account for the formation of a major biome as