Where is the greatest biodiversity on Earth found?

Read the following statements:
$(A)$ Tropics harbour more species than temperate or polar areas.
$(B)$ Colombia located near the equator has nearly $1400$ species of birds.
$(C)$ India has less than $105$ species of birds.

The variety of indigenous cows is an example of

How many species of Amphibians are present in the Amazonian rain forest in South America?

Which of the following has maximum genetic diversity in India?

Who among the following established naturalistic species-area relationships?