World Population Trends Study Cards

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Population Growth

The increase in the number of individuals in a population over time.

Demographic Changes

Changes in the composition of a population, such as age, sex, and ethnicity.

Urbanization

The process of population concentration in urban areas, leading to the growth of cities.

Migration

The movement of individuals from one place to another, often driven by economic, social, or political factors.

Fertility Rates

The average number of children born to a woman during her reproductive years.

Mortality Rates

The number of deaths in a population, usually expressed as a rate per 1,000 individuals.

Ageing Population

A population with a high proportion of elderly individuals, often resulting from declining fertility rates and increased life expectancy.

Population Policies

Government interventions and strategies aimed at influencing population growth, distribution, and composition.

Population Projections

Estimates of future population size and characteristics based on current trends and assumptions.

Population Density

The number of individuals per unit of area, often measured as people per square kilometer.

Demographic Transition

The shift from high birth and death rates to low birth and death rates as a result of social and economic development.

Population Pyramid

A graphical representation of the age and sex distribution of a population, typically displayed as a pyramid-shaped diagram.

Dependency Ratio

The ratio of dependent individuals (typically children and elderly) to the working-age population.

Population Control

Efforts to regulate or limit population size, often through policies and programs.

Population Growth Rate

The rate at which a population is increasing or decreasing, usually expressed as a percentage.

Population Census

A systematic collection of demographic, social, and economic data of a country's population, conducted at regular intervals.

Population Distribution

The pattern of where people live within a geographic area, such as cities, rural areas, or specific regions.

Population Dynamics

The study of how and why populations change in size, structure, and distribution over time.

Population Growth Momentum

The tendency for population growth to continue even after fertility rates decline, due to a large number of individuals in the reproductive age group.

Population Aging

The increase in the proportion of elderly individuals in a population, often associated with declining fertility rates and increased life expectancy.

Population Health

The health outcomes of a population, including factors such as life expectancy, disease prevalence, and access to healthcare.

Population Genetics

The study of genetic variation and its distribution within populations, and how it changes over time.

Population Ecology

The study of how populations interact with their environment, including factors such as competition, predation, and resource availability.

Population Momentum

The tendency for population growth to continue even after fertility rates decline, due to a large number of individuals in the reproductive age group.