What are the benefits of cattle farming?

Which of the following conditions will give the most benefits? Why?
$(a)$ Farmers use high-quality seeds,do not adopt irrigation or use fertilizers.
$(b)$ Farmers use ordinary seeds,adopt irrigation and use fertilizer.
$(c)$ Farmers use quality seeds,adopt irrigation,use fertilizer and use crop protection measures.

How are fish obtained?

Compare the use of manure and fertilizers in maintaining soil fertility.

What do we get from cereals,pulses,fruits and vegetables?

Discuss the implications of the following statement:
"It is interesting to note that poultry is India's most efficient converter of low fibre food stuff (which is unfit for human consumption) into highly nutritious animal protein food."