The carrying capacity of a population is determined by its

Slow population growth was due to a high birth rate and a high death rate,which characterized the stage of:

The magnitude of $r$-value (intrinsic rate of natural increase) for the Norway rat is:

Exponential growth of a species can be expressed as:

If in a population of size $N$,the birth rates are represented as $b$ and death rates as $d$,then the increase or decrease in $N$ during a unit time period $t$ will be:

The intrinsic rate of natural increase is represented by which of the following?