Lactational amenorrhoea, is a natural way of birth spacing. It is due to high level of

Slippery nature of orthoboric acid is due to

Slippery nature of orthoboric acid is due to

Ionisation potential of fluorine is abnormally high. It is due to

Ionisation potential of fluorine is abnormally high. It is due to

What is true for "lactational amenorrhoea" ? i) It means absence of menstruation ii) Ovulation does not occur during the lactational period iii) Chances of contraception are almost nil upto six months following parturition iv) Side effects are almost nil v) Contraceptive efficiency reduces after the period of intense lactation vi) It is a natural method of contraception

Animals exhibiting which level of organisation lead relatively more efficient way of life when compared to those of the other levels of organisation? Why?

The high density of water compared to ice is due to

The versatile nature of carbon is due to

Complete lactation could help as a natural method of contraception. (True / False)