The $CO_2$ content of the atmosphere has increased in the last $150$ years from:

Consider the following statements:
$I.$ Reforestation is the process of restoring a forest that once existed but was removed at some point of time in the past.
$II.$ Reforestation may occur naturally in a deforested area.
$III.$ $A$ tree plantation movement or Van Mahotsava is being carried out in India since $1982$.
Which of the statements given above are correct?

Arrange the following options in ascending order of their $BOD$ value.
$I.$ Sample of highly polluted pond water.
$II.$ Sample from unpolluted pond water.
$III.$ Distilled water.

In the given pie chart,what do $W, X, Y$ and $Z$ represent respectively?

The Government of India has introduced a concept to work closely with local communities for the protection and management of forests,which is called:

In Maharashtra,a $24$-hour toll-free helpline number $1926$ has been set up to provide information regarding . . . . . . .