The percentage ratio of natality over mortality is called
Vital index
Population density
Total count of individuals
Fertility rate
Higher human population in cities is mainly due to
Which one of the following is an example of Hormone releasing $IUD$ ?
Statement 1: Human population doubles after every $35 \;years$ as against $200\; years$ in $1600-1800$
Statement $2$: Rapid increase is due to the better health facilities
According to the population of different states of India, Madhya Pradesh is placed at which position
Which of the following viruses is not transferred through semen of an infected male?