The crude number of births by a population per unit time is called:

Which environmental conditions are available for organisms that produce a large number of offspring at once versus those that produce only one offspring,considering their life history traits and the constraints imposed by biotic and abiotic factors?

The given diagram of an age pyramid represents . . . . . . .

The geometric representation of age structure is known as:

Find out the population density when $N$ is $1000$ and $S$ is $100 \, m^{2}$.

Density of population increases when . . . . . . .