The most important factor which determined the increase in human population in India during the $20^{\text {th }}$ century.
Natality
Mortality
Immigration
Emigration
The formula for exponential population growth is
If the rate of addition of new members increases with respect to the individual host of the same population, then the graph obtained has:
The following graph depicts changes in two populations $(A$ and $B)$ of herbivores in a grassy field. $A$ possible reason for these changes is that
When environmental conditions are favourable, then population growth curve will be
In India, the population growth