The pollution in a city like $Delhi$ may be controlled to a great extent by:

What is the year associated with the Chipko movement?

Assertion : The concentration of methane in the atmosphere has more than doubled in the last $250$ years.
Reason : Wetlands and rice fields are the major sources of methane.

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?

As an individual,what measures would you take to reduce environmental pollution?

For which major rivers in India has the Ministry of Environment formulated an action plan?