The proportion of individuals of different ages within a population. You can use an age distribution to estimate survival by calculating the difference in proportion of individuals in succeeding age classes.
Capacity
The amount of people an area can support.
Demographic Momentum
The tendency for a growing population to continue growing after a fertility decline because of their young age distribution. This is important because once this happens a country moves to a different stage in the demographic transition model.
Demography
The scientific study of population characteristics.
Ecumene
The area of land occupied by humans.
Epidemilogic Transition
The distinctive cause of death in each stage of the demographic transition. Explains how countries’ population changes.
J-Curve
The shape of a line graph of a population map when growth is exponential.
Medical Revolution
The leap of medical knowledge in stage 2 of the demographic transition.
Mortality
The rate at which people die.
Natility Rate (NIR)
Number of birth/year to every 1000 people in the population.
Population Projection
Estimation of future population growth by extrapolating from current trends and known growth factors.
Sex Ratio
The ration of men to women.
Standard of Living
The goods and services and their distribution within a population.
Sustainability
The level of development that can be maintained without depleting resources.
Demographic Transition Model
A model that tracks the steps through which a society's population moves as a country/region progresses towards industrialization.