Rapid population growth

Population growth was slow until the start of the 19th
The worlds population took thousands of years to get to 1 billion (1804)
It took 123 years to reach 2 billion
Reached 3 billion in another 33 years
By the end of the 20th century it had doubled to 6 billion
It only took 11 more years to get to 7 billion
Experts think global population will stabilise at 9.5 billion by 2050
Natural increase - population grows when the birth rate is higher than the death rate
Medical progress lowers the birth rate
1. Primary healthcare - preventing disease e.g. immunisation
2. Secondary healthcare - treatment of illnesses
These social, economic and political factors keep the birth rate high
1. Social
  1. Family planning is not widely used
  2. Women receive little education and marry young
  3. Families of five or more children are considered normal
2. Economic
  1. Children work to support the family
  2. Parents rely on their children in old age
3. Political
  1. Governments do not provide family planning help
  2. Religions may not approve of birth control

Resumen del Recurso

	Creado por SEOTP hace casi 11 años