Which method undergoes continuous changes and improvements over time?

Assertion $A$: Breeding between animals of the same breed is a method of outcrossing.
Reason $R$: Offspring with completely different traits not present in the parents can be obtained.
Which option is correct for Assertion $A$ and Reason $R$?

Silk,honey and lac are:

Which of the following is the first fungicide?

Select the correct match for $X$ and $Y$:

Column $X$	Column $Y$
$(1)$ Palanpur	$(P)$ $IVRI$
$(2)$ Mehsana	$(Q)$ Banas Dairy
$(3)$ Anand	$(R)$ Dudhsagar Dairy
$(4)$ Izatnagar	$(S)$ Amul Dairy

In the dairy industry,cattle farmers are central because .......