How many countries pledged their commitment to achieve a reduced rate of biodiversity loss by $2010$ in the World Summit on Sustainable Development held in $2002$ in Johannesburg,South Africa?

The state of Gujarat has river,desert,forest,and lake ecosystems,thus exhibiting a diversity of life. Which measure do you use to denote total diversity in such a case?

In the equation $S = CA^z$,where $S =$ species richness,$A =$ area,$Z =$ slope of the line,and $C =$ $Y$-intercept. If area is on the $X$-axis and species richness is on the $Y$-axis,what will the graph of $S = CA^z$ look like?

Assertion : Diversity observed in the entire geographical area is called gamma diversity.
Reason : Biodiversity decreases from high altitude to low altitude.

In the Amazonian rainforest,at least $.........$ insect species are yet to be discovered and named.

What is the total number of biodiversity hotspots in the world?