What are the food requirements of dairy animals?

Bhetki,mullets,pearl spots and prawns are some of marine fish of high economic value.

$(i)$ Poultry is India's most efficient converter of low-fibre foodstuff into highly nutritious animal protein food. Justify the statement.
$(ii)$ What do we call the birds which are reared for eggs and those which are reared for meat?
$(iii)$ Name one indigenous and one exotic breed of poultry.

$(a)$ What do the terms 'macronutrients' and 'micronutrients' signify?
$(b)$ Briefly describe the formation of vermicompost and green manure.

Which of the following are exotic breeds of cattle?

Two friends,Girish and Neeraj,were discussing Newton's third law. They were perplexed about how action and reaction are equal and opposite. They could not think of an experiment by which they could ascertain this fact. Pushkar,who was their friend,told them that he would set up an experiment to prove this to them. By performing an experiment,Pushkar demonstrated the law.
$(a)$ Can you think of an experiment by which you can demonstrate this law?
$(b)$ What values do you think Pushkar has?