Population Pyramids And The DTM Flashcards
What features would the population pyramid for stage 1 have?
High birth rate
High infant mortality rate (quickly sloping sides)
Death rate high and life expectancy low (shortest pyramid)
What features would the population pyramid for stage 2 have?
Death rates begin to fall (sides slightly less concave)
Life expectancy begins to rise
What features would the population pyramid for stage 3 have?
Narrowing base shoes the decrease in birth rates typical of stage three countries
Birth rate decreases quickly
More people living longer
What features would the population pyramid for stage 4 have?
Straight sided showing steady birth rate
High life expectancy allows most people to live into their 70’s
What features would the population pyramid for stage 5 have?
Not sustainable
Low birth rate
Increasing elderly population (will be few working adults to support them)
