The population surge $230$ years ago was due to:

According to which theory will the human population outrun the food supply?

Any species growing $A$ under unlimited resource conditions can reach enormous population densities in a short time. Darwin showed how even $B$ growing animal like elephant could reach enormous numbers in absence of check and that characteristics of organism is called $C$. Choose the correct option for $A, B$ or $C$ respectively.

Assertion: In a sigmoid growth curve,the population finally stabilizes itself.
Reason: Finally,the death rate increases more than the birth rate.

Which of the following formulas can be used to measure exponential growth?

If $N$ is the population density at time $t$,then at time $t + 1$,the density is calculated as . . . . . . .