demographic transition model

• overpopulation is where there are too many people for the available land and resources
• stage one birth rate

  high and fluctuating
• stage one death rate

  high and fluctuating
• stage one natural increase

  low
• stage one reasons

  • no birth control
  • many children die in infancy so parents tend to have more children to hope more will live
  • famine and malnutrition
  • lack of clean water, medical care and drugs
• stage one examples

  • only a few remote tribes are stage one
• stage two birth rate

  high
• stage two death rate

  decreasing rapidly
• stage two natural increase

  becoming high
• stage two reasons

  • many children mean more workers in the field
  • no birth control
  • infant mortality decreased
  • more children to support parents in old age
  • improvements in medical care, hospitals and water supply
  • improvements in food supplies
• stage two examples

  • haiti
  • niger
  • chad
  • UK in 1750 - 1900
• stage three birth rate

  decreasing
• stage three death rate

  low
• stage three natural increase

  high becoming low
• stage three reasons

  • introduction of birth control
  • lower infant mortality rate
  • more people live in cities where it costs more
  • there are state pensions so younger people dont have to support older people
  • more women stay in higher education
• stage three examples

  • brazil
  • bangladesh
  • india
  • UK 1900 -1950
• stage four birth rate

  low but may fluctuate
• stage four death rate

  low and may fluctuate
• stage four natural increase

  low
• stage four reasons

  same as stage three
• stage four examples

  • canada
  • japan
  • UK
• stage five birth rate

  low
• stage five death rate

  low
• stage five natural increase

  natural decrease
• stage five reasons

  same as stage three
• stage five examples

  • greece
  • croatia