unit 3: population Flashcards
Life expectancy
average number of years a person is but did any point in history her life
factors that affect life expectancy
gender, healthcare, wealth, age
crude birth rate
Number of children born per 100 people, high above 30/100, low below 15/1000
crude death rate
Number of people who die per 100 people, high above 20/1000, low below 10/1000
rate of natural increase
crude birth rate minus crude death rate
mortality
people who die
rule of 70
70 divided by the percentage of growth equals Guthrie in years equal 70 years at 1% growth
s-curve
what to make increase till needed
J curve
exponential growth
overpopulation
too many people living in an area that can’t support it
caring capacity
Number of people in area can support
arimetic density
Number of people over the amount of land
psychological density
Number of people over the amount of farmable land
agricultural does density
Number of farmers of them out of farmable land
