The most important factor which determined the increase in human population in India during the $20^{\text {th }}$ century.
Natality
Mortality
Immigration
Emigration
Under a particular set of selection pressure, organisms evolve towards the most ...$A$... reproductive strategy. Some organisms breed only ...$B$... in lifetime while others breed ....$C$... in life time
Choose the correct option for $A, B$ and $C$
Assertion : The sex ratio of Kerala is highest in India.
Reason : In countries like India the population is increasing at a rapid rate.
What are the factors affecting population growth ?
The rate of natural increase in human population refers to