how is the total number of people on the planet determind
natural population growth
natural population growth
the difference between the crude birth rate and the crude death rate
natural population decrease
when more people die than are born
natural population increase
when more people are born than die
crude birth rate
the number of babies born per 1,000 people per year
crude death rate
the number of people who die per 1,000 people per year
fertility rate
the number of babies born per 1,000 women of childbearing age
What are population indicators
they tell us things about population, they dont cause population change or growth but help us measure things about population
examples of population indicators
birth rate
death rate
natural increase
life expectancy
population density
fertility rate
infant mortality rate
literacy rate
migration rate
total fertility rate
the average number of children that would be born alive to a woman during her lifetime if she were to pass through her childbearing years
childbearing
the process of giving birth to children
infant mortality rate
the number of babies that die before their first birthday per 1,000 babies born per year
child mortality rate
the number of children who die before their fith birthday per 1,000. year.
life expectancy
how long people live (years)
population for the first 200,000 years
the worlds population was small due to high crude death rates matching high crude birth rates
when did the population reach 1 billion
1800
1800-1950 population
increase to 2 billion. achhieved by falling mortality rates in developed countrys eg germany. more children lived to adult hood resulting in natural population increase with higher crude birth rates than crude death rates
when was the majority of the population explosion
1960-2012
