development

development

1. birth rate

   • number of baby's born per 1000 people in a year
   • developed country's have low birth rate
   • developing countries have high birth rate

2. death rate

   • is the deaths in a year per 1000 people
   • developed countries have a low death rate
     • because of better heath care
   • developing countries have a high death rate
     • because they have bad health care

3. population growth rate

   • increase of countries population in a year
   • developed countries have a low growth rate
   • developing countries have a high growth rate
   • calculate population growth: (present population - past population) times 100 divided by past population

4. population pyramids

   • distribution of various age groups in a human population
   • stage 1 and 2
     • expanding pyramid
     • high birth rate
     • *little birth control and health care, *lack of knowledge about preventing diseases, *lack of clean water and proper sewage, *poor food hygiene
   • stage 3
     • stable pyramid
       • low birth rate
       • low death rates
       • stop growing of fewer babies are born and fewer old people are dying
   • stage 4
     • constructive pyrimd
     • shrinking instead of growing at the base
     • low birth rate , more people older than 50 years , long live expectancy, low death rate, very developed countries, education, health care, practises birth control, no negative environment factors