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| 234674953 | Agricultural density | ratio of number of farmers to the amount of arable land | 0 | |
| 234674954 | Agricultural revolution | the time when human beings first domesticated plants and animals and no longer relied entirely on hunting and gathering | 1 | |
| 234674955 | Arithmetic density | total number of people divided by total land area | 2 | |
| 234674956 | Census | a regular counting of citizens, their age, ethnicity, etc. living in a country | 3 | |
| 234674957 | Crude Birth Rate (CBR) | total number of live births in a year for every 1,000 people alive in the society | 4 | |
| 234674958 | Crude Death Rate (CDR) | total number of deaths in a year for every 1,000 people alive in the society | 5 | |
| 234674959 | Demographic transition | a similar process of change in a society's population | 6 | |
| 234674960 | Demography | study of population characteristics | 7 | |
| 234674961 | Dependency ratio | number of people who are too young or too old to work, compared to the number of people in their productive years | 8 | |
| 234674962 | Doubling time | number of years needed to double the population, assuming a constant rate of natural increase | 9 | |
| 234674963 | Epidemiologic transition | focuses on distinctive causes of death in each stage of the demographic transition. | 10 | |
| 234674964 | Epidemiology | the branch of medical science concerned with the incidence, distribution, and control of diseases that affect large numbers of people | 11 | |
| 234674965 | Ecumene | portion of Earth's surface occupied by permanent human settlement | 12 | |
| 234674966 | Industrial Revolution | began in England in the last 18th century and spread to the European continent and North America during the 19th century; conjunction of major improvements in industrial technology that transformed to the process of manufacturing goods and delivering them to market | 13 | |
| 234674967 | Infant Mortality Rate (IMR) | the annual number of deaths of infants under one year of age, compared to total live births | 14 | |
| 234674968 | Life expectancy | measures the average number of years a newborn infant can expect to live at current mortality levels | 15 | |
| 234674969 | Medical Revolution | medical technology developed in Europe and North America diffused into less developed countries of Africa, Asia, and Latin America; caused late twentieth-century push of countries into stage 2 | 16 | |
| 234674970 | Natural Increase Rate (NIR) | percentage by which a population grows in a year. It is computed by subtracting CBR from CDR, after converting numbers to percentages | 17 | |
| 234674971 | Overpopulation | Is a condition where the human population exceeds the carrying capacity of its habitat | 18 | |
| 234674972 | Pandemic | a disease that occurs over a wide geographic area and affects a very high proportion of the population | 19 | |
| 234674973 | Physiological density | the number of people supported by a unit of arable land in a region | 20 | |
| 234674974 | Population pyramid | shows percentage of population in 5-year age groups, with the youngest group at the base of the pyramid and the oldest group at the top. The length of the bar represents the percentage of the total population in that group. Males are usually on the left and females on the right | 21 | |
| 234674975 | Sex ratio | number of males per 100 females in the population | 22 | |
| 234674976 | Total fertility rate (TFR) | the average number of children a woman will have throughout her childbearing years (roughly ages 15 through 49) | 23 | |
| 234674977 | Zero population growth (ZPG) | CBR declines to the point where it equals the CDR, and the NIR approaches zero; usually happens in stage 4 countrties | 24 | |
| 234674978 | Brain Drain | large-scale emigration by talented people | 25 | |
| 234674979 | Chain migration | the migration of people to a specific location because relatives or members of the same locations previously migrated there | 26 | |
| 234674980 | Circulation | short term, repetitive, or cyclical movements that recur on a regular basis, such as daily, monthly, or annually | 27 | |
| 234674981 | Counterurbanization | net migration from urban to rural areas | 28 | |
| 234674982 | Emigration | the migration from a location | 29 | |
| 234674983 | Floodplain | the area around a river subject to flooding during a specific number of years, based on historical trends | 30 | |
| 234674984 | Forced migration | migrants are compelled to move by cultural factors | 31 | |
| 234674985 | Guest workers | workers who migrate to the more developed countries of Northern and Western Europe, usually from Southern and Eastern Europe or from North Africa, in search of higher paying jobs | 32 | |
| 234674986 | Immigration | the migration to a location | 33 | |
| 234674987 | Internal migration | permanent movement within the same country | 34 | |
| 234674988 | International migration | permanent movement from one country to another | 35 | |
| 234674989 | Interregional migration | movement from one region of a country to another | 36 | |
| 234674990 | Intervening obstacle | environmental or cultural feature that hinders migration | 37 | |
| 234674991 | Intraregional migration | movement within one region [of a country] | 38 | |
| 234674992 | Migration | a permanent move to a new location | 39 | |
| 234674993 | Migration transition | consists of changes in a society comparable to those in the demographic transition | 40 | |
| 234674994 | Mobility | general term covering all types of movements from one place to another | 41 | |
| 234674995 | Net migration | difference between number of immigrants and the number of emigrants | 42 | |
| 234674996 | Pull factor | induces people to move into a new location | 43 | |
| 234674997 | Push factor | induces people to move out of their present location | 44 | |
| 234674998 | Quotas | Maximum limit on the number of people who could immigrate to the United States from each country during a one-year period | 45 | |
| 234674999 | Refugees | People who have been forced to migrate from their home and cannot return for fear of persecution because of their race, religion, nationality, membership in a social group, or political opinion | 46 | |
| 234675000 | Undocumented immigrants | Immigrants who enter a country without proper documents | 47 | |
| 234675001 | Voluntary migration | Implies that the migrant has chosen to move for economic improvement | 48 | |
| 234704324 | Population Density | Average number of people living in an area. Population/Area | 49 | |
| 234704325 | Population Distribution | How much the population is distributed over a certain area. | 50 | |
| 234704326 | Dot Map | A map type that uses a dot symbol to show the presence of a feature or phenomenon | 51 | |
| 234704327 | Underpopulation | A drop or decrease in a region's population. | 52 | |
| 234704328 | Megalopolis | A cluster of large cities | 53 | |
| 234704329 | Population Composition | The distribution within a group of people of specified individual attributes such as sex, age, marital status, and education. | 54 | |
| 234704330 | Stationary Population Level | The Population ceases to grow. | 55 | |
| 234704331 | Population Explosion | The population is growing rapidly. | 56 | |
| 234704332 | Population Projection | The prediction of future populations based on the present age-sex structure, and with the present rates of fertility and mortality. | 57 | |
| 234704333 | Endemic | Effects only a certain region. | 58 | |
| 234704334 | Disease Diffusion | The process where a disease spreads from one place to another. | 59 | |
| 234704335 | Mortality | Death. | 60 | |
| 234704336 | Population Consumption | How much a population consumes. | 61 | |
| 234704337 | Sustainability | Slowing the rise in human population for the benefit of our planet. | 62 | |
| 234704338 | Family Planning | Women were now educated enough to make decisions of the number of babies they wanted and when they wanted them. | 63 | |
| 234704339 | Contraceptives | Birth control, and preventing babies. | 64 | |
| 234704340 | Thomas Malthus | English economist who thought that the population os outrunning the Earth's food supply | 65 | |
| 234704341 | Neo- Malthusians | Another look at Malthus's theory and realized that the world population is outstripping a wide variety of resources, not just food production. | 66 | |
| 234704342 | Expansive Population Policies | Policies to get more people to have kids | 67 | |
| 234704343 | Eugenic Population Policies | Designed to favor a racial or cultural sector of a population. | 68 | |
| 234704344 | One Child Policy | In China, they have a strict policy that you may only have one child. | 69 | |
| 234704345 | Activity Space | Space in which daily activities occur. | 70 | |
| 234704346 | Cyclic Movement | Seasonal Movement | 71 | |
| 234704347 | Periodic Movement | Involves a longer period of time away from home base | 72 | |
| 234704348 | Transhumance | Seasonal Migration of livestock between mountains and lowland pastures. | 73 | |
| 234704349 | Rural to Urban Migration | To seek economic advancement and were pushed from declining opportunities in agriculture. | 74 | |
| 234704350 | Step Migration | Step migration is a migration pattern that consists of a series of small, less extreme locational changes. | 75 |
