The shorter duration crops help the farmer:

How does catla differ from mrigal?

Define $(i)$ Vermicompost,$(ii)$ Green manure,and $(iii)$ Biofertilizer.

Give one word for the following:
$(a)$ Farming without the use of chemicals as fertilizers,herbicides,and pesticides is known as . . . . . . .
$(b)$ Growing of wheat and groundnut on the same field is called as . . . . . . .
$(c)$ Planting soybean and maize in alternate rows in the same field is called as . . . . . . .
$(d)$ Growing different crops on a piece of land in pre-planned succession is known as . . . . . . .
$(e)$ Xanthium and Parthenium are commonly known as . . . . . . .
$(f)$ Causal organism of any disease is called as . . . . . . .

Once Ram's mother Sunita went to her friend's home along with Ram. On visiting there,Ram saw a wet khus-khus screen hung at the door of the room. He asked his mother why they had hung this screen,and his mother answered that it keeps the room cool. Ram was satisfied and smiled.
$(a)$ According to you,what qualities are possessed by Ram?
$(b)$ How does a wet khus-khus screen hung at the door keep the room cool?

$(a)$ Name one indigenous and one exotic breed of domestic fowl.
$(b)$ What are the two main products obtained from raising domestic fowl?
$(c)$ Name two vitamins that should be included in high amount in poultry feed.