How many genetically different strains of rice are there in India?

Given below is the representation of the extent of global diversity of vertebrates. What groups do the portions represent?

According to the representation of global biodiversity proportions for the number of species of major taxa of vertebrates,select the appropriate option for the labels $X$,$Y$,and $Z$ in the given figure.

Which of the following statements describes a stable community?

Tropical rain forests are found in

The term Biodiversity is popularized by . . . . . . .