The total national income is divided by the total population of the country, then it is known as
Per capita income
Population income
Per capita production
Per capita gross income
Castration cannot be taken as a contraceptive device, because
According to the population of world, India is placed at
$A$ : Gossypol inhibits spermatogenesis.
$R$ : Centchroman inhibits ovulation
According to which theory will be the human population out-run food supply
The scientist who propounded that population is a group of species