Find out the natural contraception methods $I$. Implantation $II$. Lactational (amenorrhoea) $III$. Condoms $IV$. Vasectomy $V$. Tubectomy $VI$. Sterilisation

Match the following figures with their respective identify

$I$. Tubectomy $II$. Vasectomy

$III$. Implants $IV$. Condoms

$V$. Copper$-T$

Which of the following is a once-a-week pill with very few side effects and high contraceptive value?

Find out the right aspects of lactational amenorrhoea

$I$. 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

Give scientific reasons : Pills taken orally prevents pregnancy.