First dose of $BCG$ vaccine is given at the time of
Birth
$6 \;months$ after birth
$8 \;months$ after birth
$10\; months$ after birth
The least densely populated state of India is
What is the function of copper ions in copper releasing $IUDs$?
In which one of the following the birth rate is high & death rate is normal
The natural growth rate of population is checked by certain factors. These are known as