What is the full form of $IUCN$?

The country whose tropical rain forests possess the greatest biodiversity on earth is

The total number of biodiversity hotspots currently identified worldwide is $.........$.

Study the following statements and select the correct option given below:
Statement-$I$: Biodiversity is the variety of features of life observed in the living organisms at different levels within a defined area.
Statement-$II$: Living organisms' attempt to accommodate with different environmental conditions forms the basis of diversity.

Which region shows a very high level of species richness?

What is a species called that is restricted to a specific geographical area?