Which of the following is considered a hot-spot of biodiversity in India?

The Amazonian rain forest in South America is home to more than $A$ species of plants and $B$ species of fishes.

India has more than ........ genetically diverse strains of rice and more than ........ varieties of mango.

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.

How many biodiversity hotspots have been identified by Norman Myers globally to date?

Regional diversity is also called