population Flashcards
population growth is the result of the balance between three variables…
Death rate
birth rate
migration
birth rate definition
the number of live babies born per thousand of the population per year
death rate definition
the number of deaths per thousand of the population per year
migration
the number of people moving in or out
formula for population density
number of people / area
what is population density measured in?
km^2
what are densely populated areas
areas of high population density
what are sparsely populated areas
areas of low population density
overpopulation definition
where there are too many people to be supported to a satisfactory level by the resources available
underpopulation definition
where there are too few people to make the most of the resources available
optimum population
where there are the right amount of resources for the right amount of people
where is rapid population growth more likely to happen
poorer countries
what do poorer countries have
high birth rates
falling death rate
what can cause overpopulation
rapid population growth
what is a youthful population
has a high dependency rate
