Which crops were introduced to India from the New World?

From which plant is a liquid wax obtained that has properties equivalent to sperm whale oil?

Consider the following statements $(I-IV)$ regarding organic farming:
$I.$ Use of genetically modified crops like $Bt$ cotton.
$II.$ Input of naturally produced compost.
$III.$ No use of urea and pesticides.
$IV.$ Production of vitamin and mineral-rich vegetables.
Which of the above statements are correct?

Regulations governing the movement of diseased plant material are called:

Which of the following statements is true regarding pests?

Which of the following pesticides have been successfully used in the control of locusts and grasshoppers in India?