Unit 2 Flashcards
A situation in which the number of people in an area exceeds the capacity of the environment to support life at a decent standard of living
Overpopulation
The scientific study of population characteristics
Demography
The portion of earths surface occupied by permanent human settlement
Ecumene
A complete enumeration of a population
Census
Patterns of where people live
Population distribution
The total number of people divided by the total land area
Arithmetic population density
The number of people per unit of area of arable land which is land suitable for agriculture
Physiological population density
The ratio of the number of farmers to the total amount of land suitable for agriculture
Agricultural density
Total number of live births in a year for every one thousand people alive in society
Crude birth rate CBR
Total number of deaths in a year for every thousand people alive in society
Crude death rate CDR
Percent of growth of a population in a year, crude birth rate equals death rate
Natural increase rate NIR
Number of years needed to double a population assuming a constant rate of natural increase
Doubling time
Average number of years an individual can be expected to live
Life expectancy
A bar graph that represents distribution of population by age and sex
Population pyramid
Number of people under 15 and over 64 compared to the number of people active in labor force
Dependency ratio