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Unit 2

Population

TermDefinition
Agricultural density The ratio of the number of farmers to the total amount of land suitable for agriculture.
Agricultural revolution The time when human beings first domesticated plants and animals and no longer relied entirely on hunting and gathering.
Arithmetic density The total number of people divided by the total land area.
Census A complete enumeration of a population.
Crude birth rate (CBR) The total number of live births in a year for every 1,000 people alive in the society.
Crude death rate (CDR) The total number of deaths in a year for every 1,000 people alive in the society.
Demographic transition The process of change in a society's population from a condition of high crude birth and death rates and low rate of natural increase to a condition of low crude birth and death rates, low rate of natural increase, and a higher total population.
Demography The scientific study of population characteristics.
Dependency ratio The number of people under the age of 15 and over age 64 compared to the number of people active in the labor force.
Doubling time The number of years needed to double a population, assuming a constant rate of natural increase.
Ecumene The portion of Earth's surface occupied by permanent human settlement.
Epidemiologic transition Distinctive causes of death in each stage of demographic transition.
Epidemiology Branch of medical science concerned with the incidence, distribution, and control of diseases that are prevalent among a population at a special time and are produced by some special causes not generally present in the affected locality.
Industrial Revolution A series of improvements in industrial technology that transformed the process of manufacturing goods.
Infant mortality rate (IMR) The total number of deaths in a year among infants under 1 year old for every 1,000 live births in a society.
Life expectancy The average number of years an individual can be expected to live, given current social, economic, and medical conditions.
Medical revolution Medical technology invented in Europe and North America that is diffused to the poorer countries of Latin America, Asia, Africa.
Natural increase rate (NIR) The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate.
Overpopulation The number of people in an area exceeds the capacity of the environment to support life at a decent standard of living.
Pandemic Disease that occurs over a wide geographic area and affects a very high proportion of the population.
Physiological density The number of people per unit of area of arable land, which is land suitable for agriculture.
Population pyramid A bar graph representing the distribution of population by age and sex.
Sex ratio The number of males per 100 females in the population.
Total fertility rate (TFR) The average number of children a woman will have throughout her childbearing years.
Zero population growth (ZPG) A decline of the total fertility rate to the point where the natural increase rate equals zero.
Created by: rickardm11
 

 



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