Chapter 9 Terms Flashcards
demography
the study of populations
age structure
the distribution of ages in a specific population at a certain time
survivorship
the percentage of members of a group that are likely to survive to any given age
fertility rate
the average numbe rof children a woman gives birth to in her lifetime
migration
the movement of indviduals from one area to another
life expectancy
the average number of yearas members of a population are likely to live
demographic transition
a model that describes how economic and social changes affect population growth rates
infrastructure
the basic facilities and services that support a community, such as publlic water supplies, sewer lines, power plants, roads, schools, and hospitals.
arable land
land that can be used to grow crops
urbanization
the movement of people from rural areas to cities
less developed countries
countries that show few signs of development and in some cases have increasing death rates while birth rates remain high
