$A$ given habitat has enough resources to support a maximum possible number of a species. This limit beyond which no further growth is possible is called its . . . . . . for that species.

Two opposite forces operate in the growth and development of every population. One of them relates to the ability to reproduce at a given rate. The force opposite to it is called:

If in a population,the number of organisms added by $B + I$ is less than the number of organisms lost by $D + E$ at time $t$,but the population size $N$ at time $t+1$ is $10$ times greater than the initial population size,which of the following characteristics can be inferred?

The natural growth rate of population is checked by certain factors. These are known as

When the reactions are not growth limiting,the growth curve is . . . . . . .

Read the following statements and determine how many of them are correct:
$(1)$ Population is the total number of individuals of a species in a given area at a given time.
$(2)$ Developed countries show a low birth rate.
$(3)$ An equal proportion of reproductive and post-reproductive age individuals indicates a stable population.
$(4)$ In the presence of limited resources,the growth curve is sigmoid ($S$-shaped).