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2. Population Change in England and Wales 1700-2000
3. Population Change
4. World Population Changes
5. Global Natural Increase
6. Doubling Time
7. Demographic Transition Model
8. Stage 1High Fluctuating Low population
Increasing very slowly
High birth rate
High death rate
9. Stage 2Early Expanding
10. Stage 3Late Expanding
11. Stage 4Low Fluctuating
12. Demographic Transition Model
13. Reasons What do you think the reasons are for the changes at each stage?
14. Reasons for Stage 1High Fluctuating Little access to birth control
Many children die in infancy so parents have more to compensate
Children are needed to work on the land
Some religions encourage large families
Death rates are high due to disease, famine, poor diet, poor hygiene, little medical science
15. Reasons for Stage 2Early Expanding
16. Reasons for Stage 3Late Expanding
17. Reasons for Stage 4Low Fluctuating
18. Is there a Stage 5?
19. Limitations What limitations do you think there could be with the model?
It does not include the influences of migration
It assumes that all countries will go through the same pattern
There is no time scale
Reasons for birth rates and death rates are very different in different countries
And finally, is there a stage 5?
20. The End?