Match the following based on the biodiversity of the Amazon rainforest:

Column-$I$	Column-$II$
$(P)$ Plants	$(I)$ $40,000$
$(Q)$ Fishes	$(II)$ $3,000$
$(R)$ Birds	$(III)$ $1,300$
$(S)$ Mammals or Amphibians	$(IV)$ $427$
$(T)$ Reptiles	$(V)$ $378$

$A$: Taxonomic diversity represents the maximum level of species diversity.
$R$: It represents species of taxonomically different groups occurring in equal balance.

Who proposed the 'Rivet Popper Hypothesis'?

The Western Ghats have a greater diversity of which species compared to the Eastern Ghats?

The measure of the variety of species and their relative abundance present within a region is referred to as

Identify the correct statements :
$1.$ According to $\text{IUCN} (2004)$,the total number of described species is slightly more than $1.5$ million.
$2.$ Robert May estimated the total species diversity on Earth to be around $7$ billion.
$3.$ Insects make up more than $70 \%$ of all recorded animal species.
$4.$ India,with $2.4 \%$ of the world's land area,contributes $8.1 \%$ to global species diversity.