The process by which individuals are included into a population is known as

In the population curve of India, nowadays the number of

Which of the following is correct for $r$-­selected species?

If natality is represented by $-B$

If mortality is represented by $-D$

If immigration is represented by $-I$

If emigration is represented by $-E$

If population density is represented by $-N$

Then population density at time $t+1$ is represented by

In the exponential growth equation $\mathrm{N}_{\mathrm{t}}=\mathrm{N}_{0} \mathrm{e}^{\mathrm{rt}}$, $e$ represents :

Certain characteristic demographic features of developing countries are