APHUG Unit 2

Agricultural density (p. 50

The ratio of the number of farmers to the total amount of arable land (land suitable for agriculture

Arithmetic density (P. 50

The total number of people divided by the total land area.

Census (P. 46

A complete enumeration of a population.

Crude birth rate (P. 54

The total number of live births in a year for every 1,000 people alive in the society.

Crude death rate (p. 54

The total number of deaths in a year for every 1,000 people alive in the society.

Demographic transition (p. 56

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 higher total population.

Demography (p. 55

The scientific study of population characteristics.

Dependency ratio (p. 60

The number of people under age 15 and over age 64 compared to the number of people active in the labor force.

Doubling time (p. 52

The number of years needed to double a population, assuming a constant rate of natural increase.

Ecumene (p. 49

The portion of Earth's surface occupied by permanent human settlement.

Elderly support ratio (p. 61

The number of working-age people (ages 15 to 64

Epidemiologic transition (p. 64

The process of change in the distinctive causes of death in each stage of the demographic transition.

Epidemiology (p. 64

The 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 (p. 56

A series of improvements in industrial technology that transformed the process of manufacturing goods.