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