Age structure:
The distribution of persons of various ages makes up a population’s age structure.
Because it depicts demographic patterns such as birth and death rates, it is a helpful tool for social scientists, public health and health care professionals, policy analysts, and policymakers.
Death rate:
The mortality rate, sometimes known as the death rate, is a measure of the number of deaths per unit of time in a given population, scaled to that population’s size
Birth rate:
The birth rate is the number of people born in a particular period of time in a population.
The number of people born each year per 1000 people in the population is referred to as the human birth rate.
Final answer:
Hence, the age structure is the distribution of persons of various ages, the death rate is the measure of the number of deaths per unit of time in a given population, and the birth rate is the number of people born in a particular period of time in a population.