Among the classes of invertebrates that represent global biodiversity, which are the most abundant?

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.

Give scientific reasons: It is difficult to estimate global diversity for prokaryotes.

More than half of the earth's flora and fauna is found in

How many bio-geographical regions are present in India?

India's ecological diversity is greater than which Scandinavian country?