What is the forest area in Gujarat in square kilometers $(km^2)$?

Select the eco-friendly activity among the following.

$A$ successful forest conservation strategy should involve

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?

Is water conservation necessary? Give reasons.

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