MCQ
Soil fertility is reduced by:
- ACrop rotation.
- BNitrogen-fixing bacteria.
- CDecaying organic matter.
- DIntensive agriculture.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

$(A)$ Linked genes cause absolute lethality
$(B)$ Persons affected by $PKU$ do not show mental disorder
$(C)$ $F_{2}$ ratio in codominance and incomplete dominance are same
$(D)$ Sex of male Drosophila is dependent on $Y-$chromosome