age distribution
number of people in various age categories, within a given population
carrying capacity
number of people, other living organisms, or crops a region can support without environmental degradation
contact hypothesis
theory that contact between two groups can promote tolerance and acceptance
conurbation
chain of cities and towns that have expanded into one another to form a continuous urban region
crude birth rate
number of live births per 1,000 people in a population in a given year
crude death rate
number of deaths per 1,000 people per year in a given population
demographic transition theory
theory that population growth occurs in four stages based on levels of industrialization
demography
study of the size, distribution, and composition of human populations
environmental racism
practices that impact economically and socially disadvantaged communities, burdening them with a disproportionate share of environmental hazards
exurb
type of suburb that is located even farther away from the metropolitan center
fertility
number of live births in a given population, which can be affected by numerous factors including education and migration
general fertility rate
number of live births per 1,000 women of childbearing age (15 to 44) in a population in a given year
gentrification
renovation of deteriorated urban neighborhoods by more affluent people moving into the area
group threat theory
theory that when minority groups grow in size or power, the majority group feels threatened
infant mortality rate
number of babies who die before their first birthday, per 1,000 live births within a population
Malthusian theory
theory that if population growth is not controlled, the population will increase at a greater rate than its food supply
megalopolis
large conurbation where cities have expanded outward to meet, forming an urban center larger than a metropolis
metropolis
area that includes a city and its suburbs and exurbs
migration
movement of people into and out of specific areas
mortality
death rate of a population, which can be affected by factors including infrastructure, poverty, the environment, and war
natural growth rate
difference between the crude birth rate and the crude death rate
population composition
demographic profile of a population, including statistics on age, sex, ethnicity, race, and other characteristics
self-segregation
separation of a group from the rest of society by the group itself
suburbanization
population shift from central urban areas into suburbs
sustainable development
economic development that meets people's needs but does not compromise the ability of future generations to meet their needs
urban density
number of people inhabiting a given urbanized area
urban ecology
study of the relationship people living in cities have with one another and their urban environment
urban sprawl
spread of urban developments, such as housing and retail centers, to undeveloped land surrounding a city
urbanization
movement of a population from rural to urban areas
zero population growth
maintaining the population at a constant level by limiting births so that the number of people born in a year is equal to the number of people who die