demographic transition models use what two population statistics to signify change in a nations population

Answer 1

Demographic Transition Models (DTMs) primarily use two key population statistics to signify changes in a nation's population:

1. Birth Rate (Fertility Rate): This refers to the number of live births per 1,000 people in a given year. High birth rates are typically observed in the early stages of demographic transition, while rates generally decline as a country develops economically and socially.

2. Death Rate (Mortality Rate): This is the number of deaths per 1,000 individuals in a given year. In the early stages of the demographic transition, death rates are high due to poor living conditions, disease, and lack of medical care. As a country progresses, improvements in healthcare, sanitation, and nutrition lead to lower death rates.

These two statistics interact to depict the shifts in population growth rates through various stages of development, from high birth and death rates in pre-industrial societies to low birth and death rates in post-industrial societies.