Temperate evergreen forests are found in

India has more than ........ genetically diverse strains of rice and more than ........ varieties of mango.

Identify the correct statements :
$1.$ According to $\text{IUCN} (2004)$,the total number of described species is slightly more than $1.5$ million.
$2.$ Robert May estimated the total species diversity on Earth to be around $7$ billion.
$3.$ Insects make up more than $70 \%$ of all recorded animal species.
$4.$ India,with $2.4 \%$ of the world's land area,contributes $8.1 \%$ to global species diversity.

Which of the following is $NOT$ a criterion for identifying a biodiversity hotspot?

Within biological communities,some species are important in determining the ability of a large number of other species to persist in the community. Such species are called

The forests play an important role in the well-being of seven billion inhabitants of the world,of which ........... people directly depend on forests for their livelihood.