Which of the following is a viral disease in poultry?

Which of the following plants is commonly used as green manure?

The world's $P$ livestock is possessed by $Q$ and the contribution to the world farm produce is $R$.
$\quad P\quad\quad Q\quad\quad\quad\quad\quad R$
$(A)$ $70 \%\quad$ India and China $\quad 25 \%$
$(B)$ $70 \%\quad$ India and America $\quad 25 \%$
$(C)$ $30 \%\quad$ India and China $\quad 75 \%$
$(D)$ $30 \%\quad$ India and America $\quad 75 \%$

Bombykol or gyplure is a

Which of the following fish is introduced in ponds to control or eliminate the vector responsible for the transmission of malaria and filariasis?

Vitamin $B_{12}$ is most abundantly found in: