Which organization indicates that eggs have high biological value?

Artificial breeding of cattle is brought about by:

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?

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

Which is the richest source of plant protein?

What is required to obtain a variety with genetic variation?