Jhum cultivation leads to

Which of the following are the causes for deforestation?
$I.$ Human settlements
$II.$ Forest fires
$III.$ Hydroelectric projects
$IV.$ Overgrazing by livestock
$V.$ Demand of wood
Which of the statements given above are correct?

At the beginning of the $20^{th}$ century,forests covered about $......\%$ of the total land area of India,and by the end of the century,this had shrunk to $........\%$.

What do you mean by reforestation?

Afforestation is

What is reforestation?