1. GLOBAL POPULATION GROWTH

2. GLOBAL POPULATION GROWTH
Describe the growth of population between 1000 AD to 2000 AD. Suggest reasons for its growth.

3. Natural increase is due to
BIRTH RATE – number of live births per 1000 people per year
DEATH RATE - number of deaths per 1000 people per year

4. Before 1700 - Very slow growth
Cause: – high birth rate
Early marriages … more reproductive years of women
Lack of information on family planning
Traditions … sons preferred … heirs
Mainly agricultural … need labour on farm
High infant mortality rate
Cause: - High death rate
Wars, famines, diseases

5. Between 1700 – 1900 - Gradual growth
Causes – high birth rate
- falling death rate

6. Post 1900s – to present day Very rapid growth / population explosion
Causes – high birth rate
- low death rate

7. Causes of low death rate
Better medical care …more doctors, nurses
improved medicine for diseases; mass vaccination for babies
Improved hygiene …provision of flushed toilets … better sewerage disposal system
More food supply …factories producing more quantities of food … farmers use better food production methods

9. Population growth of More developed countries Slower growth
(low birth rate,
low death rate)
Less developed countries
Very rapid growth
(high birth rate
Low death rate)

10. Causes of Low Birth Rate
Late marriages …women going to work
Industrialisation and urbanisation … people don’t work on the farms … don’t require farm hand / labour on the farms
Knowledge of family planning measures eg the Pill, use of contraceptives
More people choose to remain single

11. Demographic Terms
Birth rate – number of live births per 1000 people per year
Death rate – number of deaths per 1000 people per year
Natural increase occurs when birth rate is greater than death rate
Natural decrease occurs when birth rate is less than death rate
Zero population growth – Birth rate is equal to death rate

12. Demographic Terms
Infant mortality rate – total number of deaths in a year among infants under one year of age for every 1000 live births
Life expectancy – average number of years that a person living in a particular area can be expected to live

13. SINGAPORE’S POPULATION GROWTH