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

The ................ have a greater amphibian species diversity than the .......

Which of the following statements describes a stable community?

Arrange the following in descending order of number of species in the Amazonian rain forest.
$(a)$ Plants
$(b)$ Birds
$(c)$ Fishes
$(d)$ Invertebrates
$(e)$ Mammals
Choose the correct answer from the options given below:

Bio-prospecting is exploring molecular,genetic and species level diversity for products of:

$X$ - India has $2.4\%$ of the world's land area.
$Y$ - The diversity of plants and animals is not uniform throughout the world but shows a rather uneven distribution.
$Z$ - Species-area relationships were given by Alexander von Humboldt.
Identify the truth value of $X, Y,$ and $Z$ respectively.