Population
birth rate - death rate = growth rate
how is growth rate calculated?
what are the 3 factors that have increased population growth?
spreads quickly in large populations
how has disease caused in decline in population growth?
lack of clean water, running out of resources
what are the challenges of overpopulation
created more resources and food
how has technology helped to decrease the problems of over population?
amount of time it takes a population to double
what is doubling time?
made more food available
how has agriculture increased growth rate?
not enough food available
how has famine caused a decline in population growth?
reducing the number of births
how can population growth be controlled?
smaller military and fewer working taxpayers because they have less people
what are the problems for countries with negative population growth?
births, deaths, immigration, and emigration
what are the four factors that affect growth rate?
made more resources available
how has industry increased population growth?
can lead to famine and disease
how has war caused a decline in population growth?
rapid growth, slow growth, zero growth/decrease
what are the three types of population pyramids?
reducing the number of births
how is population growth rate controlled?
when can zero population growth occur?
better medicine, improved sanitation and water treatment
how has health care increased population growth?
the study of population statistics
what is demography?
down the left side of the graph
where are ages listed on a population pyramid?
when can population growth occur?
zero population growth
what is the goal for people studying population?
disease, famine, war
what 3 factors have lead to a decline in population growth?
shows us what our future needs will be
how does demography prepare us for the future?
along the bottom
where are the percents of population listed on a population pyramid?
disease, famine, war
what factors have caused a decline in population growth?