STD 12 - 7. human health and disease — NEET STD 11 Science — Question

$I$. Ovulation do not occur during the lactational period

$II$. Chances of the failure of contraception are almost nil upto six months following parturition

$III$. Side effects are almost nil

$IV$. It is a natural method of contraception

$V$. It increases phagocytosis of sperms

$CO _{2}+ H _{2} O \stackrel {A} {\rightleftharpoons} H _{2} CO _{3} \stackrel {B} {\rightleftharpoons} \rightleftharpoons HCO _{3}^{-}+ H ^{+}$