The Aravalli hills are located in which state?

Who among the following established naturalistic species-area relationships?

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.

According to the Rivet Popper Hypothesis,the airplane represents:

Developing or underdeveloped nations are rich in which of the following aspects?

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