The most common pesticide used in India is

Consider the following statements about Ramesh Chandra Dagar's work in the field of organic farming:
$I.$ Ramesh Chandra Dagar's work includes bee-keeping,dairy management,water harvesting,composting,and agriculture in a chain of processes.
$II.$ In this process,there is no need to use chemical fertilisers for crops as cattle excreta is used as manure.
$III.$ Crop waste is used for making compost,which is used as natural fertilizer.
$IV.$ Compost generates natural gas,which is used for the energy needs of the farm.
Which of the statements given above are correct?

Which of the following organisms is likely to have the highest concentration of $D.D.T.$ in its body?

In which year was the Joint Forest Management $(JFM)$ scheme introduced in India?

Ramesh Chandra Dagar includes . . . . . . for case study of organic farming.

$A$ greenhouse is primarily used to grow plants during the $..........$ season.