The ration (daily food requirement) for broilers is carbohydrate-rich with adequate minerals.

Poultry fowl are susceptible to the following pathogens:

$A$ farmer had a plot just beside the bank of a river. Each time he planted $Kharif$ crops,the crops got damaged due to floods. He consulted an agricultural scientist who gave him a special variety of seeds and also advised him to practice fish farming.
$(a)$ What was the specialty of these seed grains?
$(b)$ What name can be given to this type of fish farming?

Name any one method of incorporating desirable characters into a crop variety.

Why is organic matter important for crop production?

Mention any two abiotic factors that affect crop production.