The number of species facing the threat of extinction worldwide is

Approximately $.........$ plant species are used by indigenous people around the world in traditional medicines. (in $,000$)

The species confined to a particular region and not found elsewhere is termed as

In a given habitat,we have $20$ plant species and $20$ animal species. Should we call this 'diversity' or 'biodiversity'? Justify your answer.

How many countries pledged their commitment to achieve by $2010$,a significant reduction in the current rate of biodiversity loss at global,regional,and local levels in the World Summit held in $2002$?

India has nearly ..... varieties of plants. (in $,000$)