Population dynamics

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  • World population is growing , at least 65 million people were added to the global total of around 6.6 billion in 2008.
  • Exponential growth ocurred. 
  • Since 2000 the rate of growth slowed down  

Population change is produced by migration and natural change. If there are more births than deaths population will increase. If there are more deaths than births the population will decline. 

  • Migration is the movement of people round the places
  • Emigrants ( out-goers)
  • Immigrant (incomers)

Natural increase: difference between death and birth rates 

HIGH BIRTH RATES

  • need loads of children for work
  • low levels of education
  • tradition of large families
  • culture of large families being important

LOW BIRTH RATES

  • better education ( putting career and education before children ) 
  • wider use of contraception
  • women want to develop their careers
  • expensive to raise children

HIGH DEATH RATES

  • dirty water supplies= diseases e.g. cholera
  • not enough food= famine
  • loads of countries suffer from Malaria 
  • natural disasters= lack of management
  • lack of medical care

LOW DEATH RATES

  • good medical support
  • clean water supply= no diseases
  • family who has enough money to supply food
  • well managed natural disasters
  • better sewage facilities (sanitation) 
  • better education 

CHINA'S ONE CHILD POLICY - CASE STUDY  

  • WHY? = CHINA'S population increased

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