How many bio-geographical regions are present in India?

Given below are pie diagrams $I$,$II$ and $III$ related to the proportionate number of species of major taxa of invertebrates,vertebrates and plants respectively. Critically study and fill in the blanks $A, B, C$ and $D$.

Define/Explain: Endemism.

Provide the definitions/explanations for the following:
$(i)$ Species Diversity
$(ii)$ Endemism

How many species of birds are found in Colombia?

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?