Natality refers to.

Which of the following contributes to an increase in population density?

The unchecked reproductive capacity in a population is called ..........

The distribution of the human population on Earth is:

The population of any species is:

Read the given statements carefully and select the correct ones:
$(1)$ Individuals of the same species together form a population.
$(2)$ Mortality is an important factor for population growth.
$(3)$ Natality (birth rate) is an important factor for the immediate increase in population size.
$(4)$ In commensalism,both organisms benefit from the interaction.