Question | Answer |
World Population in 2008 | 6.7 billion |
Estimated population for 2050 | 7.2-10.6 |
rate of growth in the world | 80 million new people every year |
what is the population change equation | PC=(births+immigration)-(Deaths+emigration) |
what is the crude birth rate? | births per 1000 people in a population/year |
what is the crude death rate? | deaths per 1000 people in population/year |
what is the total fertility rate | the number of children a woman has had during her lifetime, averaged for population. same as biotic potential |
what is the replacement level fertility | the number of children needed to replace everyone in the population. this varies between regions. |
what is zero population growth | birth rate = death rate |
sex ratio | relative number of males and females in a population |
age distribution | number of individuals of each age in a population |
growth is determined by________. | teenagers |
traits of developed countries | low infant mortality rates
life expectancy 77 years
total fertility rate 2
21% population <15
12% population >65
per capita GDP 36,110 |
traits of developing countries | high infant morality rates
life expectancy 52 years
total fertility rate 5.7
44% population <15
3% population >65
per capita GDP 800$ |
factors that determine the impact of a society on natural resources. | population size, population density, degree of technological development |
demography | study of populations and their characteristics |
factors affecting birth rates and total fertility rates | children in the labor force
cost of raising and education children
avalibility of pension systems
urbanization
education and employment for women
infant mortality rates
average marrying rate
abortion
avaliability of birth control |
what is the major factor in determining the family size is the role of ________ in society. | women |