The most rapidly dwindling natural resource in the world is

Which of the following is the correct match between List-$I$ and List-$II$?

List-$I$	List-$II$
$1$. Python	$a$. Tapti River
$2$. Hangul	$b$. Sabarmati River
$3$. Monal	$c$. Endangered Mammal
$4$. Dharoi Dam	$d$. Endangered Reptile
	$e$. Endangered Bird

The $pH$ of a water sample collected from a river was found to be acidic in the range of $3.5 - 4.5$. On the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the $pH$ of river water?

Which of the following options is $NOT$ included in recycling for environmental conservation?

Pick the right combination of terms which has no fossil fuel.

In our country,vast tracts of forests are cleared and a single species of plant is cultivated. This practice promotes