| A | B |
|---|
| Agricultural Density | Ratio of the number of farmers to the total amount of land suitable for agriculture |
| Agricultural Revolution | Time when human beings first domesticated plants and animals and no longer relied entirely on hunting gathering |
| Arithmetic Density | Total number of people divided by the total land area |
| Census | Complete enumeration of a population |
| Crude Birth Rate | (CBR) Total number of live births in a year for every 1,000 people alive in the society |
| Crude Death Rate | (CDR) Total number of deaths in a year for every 1,000 people alive in a society |
| Demographic Transition | 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 | Scientific study of population characteristics |
| Dependency Ratio | 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 | Number of years needed to double a population, assuming a constant rate of natural increase |
| Ecumene | Portion of Earth's surface occupied by permanent human settlement |
| Industrial Revolution | A series of improvements in industrial technology that transformed the process of manfactured goods |
| Infant Mortality Rate | (IMR) Total number of deaths in a year among infants under 1 year old for every 1,000 live births in a society |
| Life Expectancy | Average number of years an individual can be expected to live, given social, economic and medical conditions. Average number of years a newborn infant can expect to live |
| Medical Revolution | Medical technology invented in Europe and North America that is diffused to the poorer countries of Latin America, Asia, and Africa |
| Natural Increase Rate | (NIR) Percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate |
| Overpopulation | Number of people in an area exceeds the capacity of the environment to support life at a decent standard of living |
| Population Pyramid | A bar graph representing the distribution of population by age and gender |
| Sex Ratio | The number of males per females in the population |
| Total Fertility Rate | (TFR) Average number of children a woman will have throughout her childbearing years |
| Zero Population Growth | (ZPG) Decline of the total fertility rate to the point where the natural increase rate equals zero |
