An increase or decrease in the size of a population. It is equal to (Births + Immigration) [[minus]] (Deaths + Emigration).
Crude birth rate
the number of live births yearly per thousand people in a population
Crude death rate
The number of deaths per year per 1,000 people.
Total fertility rate
The number of children born to an average woman in a population during her entire reproductive life
Infant mortality rate
the death rate during the first year of life
proportion of people in different age groups in a population
(demographic transition) birth & death rates high, population grows slowly, infant mortality high
death rate lower, better health care, population grows fast
decline in birth rate, population growth slows
(demographic transition) low birth & death rates
Replacement level fertility
the number of children a couple must have to replace themselves (2.1 developed, 2.7 developing)developing)
change in a population from high birth and death rates to low birth and death rates
the period of high birth rates between 1946 and 1964
an expected time to live as calculated on the basis of statistical probabilities
0-14 years old
45+ years old
A sudden decline in the birthrate, especially the one in the United States from about 1961 to 1981
the 83 million people born from 1977 to 2000
the social process whereby cities grow and societies become more urban
The pyramid shaped graph where there are many more children than adults.
The square like pyramid shaped graph where the higher you get on the pyramid, the less people there are.
A decline of the total fertility rate to the point where the natural increase rate equals zero.
when the death rate exceeds the birth rate
Demographically divided world
a world divided by people living in developed countries and developing countries