Definition / Explanation: $\beta$-diversity.

$A$ strict protection of biodiversity hotspots could reduce the ongoing mass extinction by almost (in $\%$)

In India,rain forests are found in

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 $2002$?

Which of the following is correctly matched?
$I$. Alpha diversity - Number of species in a given habitat
$II$. Genetic diversity - Variation of the genes within species
$III$. Beta diversity - Diversity of the habitat in the whole region
$IV$. Species diversity - Product of the species richness and evenness

What is a species called that is restricted to a specific geographical area?