Ch.9 key 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 number of children a woman gives birth to in her lifetime.
Migration
The movement of individuals from one area to another
Life Expectancy
The average number of years members of a population are likely to live in.
Demographic transition
is 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 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 people from rural areas to cities.
Least developed countries
Show few signs of development and have increasing death rates and birth rates remain high.
