Answer: Natality: In humans, natality refers to the number of births per unit population per unit time, such as per thousand per year.
It increases the population by bringing in new people. It ensures population continuation.
It boosts the population’s size. The density of the population is increased by natality.
When the population size is small, it is high, and when the population number is great, it is low.
Mortality: It refers to the number of deaths per unit population per unit period, such as per 1,000 people per year in humans.
It eliminates people from the population. It reduces the population size.
Mortality lowers population density. It ensures the population’s health.
When the population is small, mortality is low; when the population is vast, mortality is high.