The ratio of the number of farmers to the total amount of land suitable for agriculture.
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Sex ratio
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the ratio of men to women
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Major Population Clusters -- Europe
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600 million people: 50 countries mostly clustered in Western Europe in Germany, Netherlands, Belgium, and France
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Infant Mortality Rate
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The total number of deaths in a year among infants under one year old per 1000 live births in a society
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Population Pyramid
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A bar graph that represents the distribution of population by age and sex
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Population Composition
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Structure of population in terms of age, sex and other properties such as marital status and education
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Demographic Transition
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the process of change in a society's population as a combination of medical advances and economic development, affecting a population's desire and ability to control its own birth and death rates
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Standard of living
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Goods and services and their distribution within a population
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Medical Revolution
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medical technology from Europe and North America that was used to eliminate many diseases in the developing world
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Major Population Clusters -- East Asia
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1/4 global population: East China, Japan, Korea, and Taiwan
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Life Expectancy
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The average number of years an individual can be expected to live given current social, medical, and economic conditions.
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Demography
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the scientific study of population characteristics
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Natural Increase Rate (NIR)
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The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate (NIR=CBR-CDR)
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Dependency ratio
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the number of people under 15 and over 64 compared to the number of people in the workforce
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Sustainability
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the level of development that can be maintained without depleting resources
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Doubling Time
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the number of years it takes for an area's population to double
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arithmetic density
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The total number of people divided by the total land area
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Census
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A complete enumeration of a population
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Epidemiological transition
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The a distinctive cause of death in each stage of the demographic transition. Explains how countries' population change.
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Population Distribution
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Description of locations on Earth's surface where populations live
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Pandemic
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Disease that occurs over a wide geographic area and affects a very high proportion of the population.
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Population Density
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A measurement of the number of people per given unit of land
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Epidemiology
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The branch of medical science that is concerned with identifying, fighting, and preventing disease.
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Crude Birth Rate (CBR)
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The number of live births in a year for every 1,000 people alive in a society
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Megalopolis
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Term used to designate large coalescing supercities that are forming in diverse parts of the world.
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agricultural revolution
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the development of farming
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Major Population Clusters -- South Asia
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1/4 of global population: India, Pakistan, Bangladesh, and Sri Lanka
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Dr. John Snow
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(1813-1858) English physician who used hand-drawn data layering on maps of London to identify and treat a cholera epidemic
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Thomas Malthus
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(1766-1834) An English economist who argued that increases in population would outgrow increases in food production, which would lead to widespread famine and disease.
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Total Fertility Rate (TFR)
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The average number of children a woman will have during her childbearing years.
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Sterilization
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any process that eliminates a person's ability to produce children
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Ecumene
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the portion of Earth's surface occupied by permanent human settlement
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Crude Death Rate (CDR)
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The number of deaths in a year per 1,000 people alive in a society
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Zero population growth (ZPG)
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A decline of the total fertility rate to the point where the natural increase rate equals zero.
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Major Population Clusters -- Southeast Asia
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600 million people: Indonesia, Philippines, and the river deltas of the Indochina peninsula
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Physiological Density
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The number of people per unit of area of arable land, which is land suitable for agriculture
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Industrial Revolution
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a series of improvements in industrial technology that transformed the process of manufacturing goods and drastically altered society
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Overpopulation
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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
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One Child Policy
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Chinese policy used to control population growth which began in the 1980's and restricted families to having only one child.
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Family Planning
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The practice of controlling the number and frequency of children conceived usually through the use of contraception or voluntary sterilization.