| A | B |
|---|
| Demographics | the applied branch of sociology that deals with population statistics |
| highly developed countries | low rates on population growth and are highly industrialized relative to the rest of the world |
| infant mortality | the number of infant deaths per 1000 live births |
| developing countries | moderately developed countries and less developed countries |
| moderately developed countries | birth rates and infant mortality rates are higher than those of highly developed countries |
| less developed countries | have highest birth rates and highest infant mortality rates, shortest life expectancies, and the lowest average percapita GNPs in the world |
| doubling time | the number of years it will take a population to double in size, given its current growth rate |
| replacement-level fertility | the number of children a couple must produce in order to "replace" themselves |
| total fertility rate | the average number of children born to each woman during her lifetime |
| demographic transition | processs where a country moves from relatively high birth and death rates to low birth and death rates |
| preindustrial stage | birth and death rates are high, population grows at a modest rate |
| transitional stage | lowered death rate |
| industrial stage | a decline in birth rates and takes place at some point during the industrialization process |
| poindustrial stage | low birth and death rates |
| age structure | the number and proportion of people at each age in a population |
| age structure diagram | the number of males and females at each age from birth to death |
| population growth momentum | continued growth of a population after fertility rates have declined |
| Baby Boom | the large wave of births that occured after World War II |
| Immigration and Nationality Act | revised many times since 1952 |
| Immigration Reform and Control Act | gives 3 groups of people priority when migrating to the USL those with family members living in the US, those who can fill vacant jobs, and those who are refugees seeking asylum |
