1. Demographic Tranisition

2. Demographic Transition
"Demographic Transition" is a model that describes population change over time

3. STAGE ONE Associated with pre Modern times
Characterized by a balance between birth rates and death rates
High Birth Rates + High Death Rates

4. STAGE TWO
Rise in population caused by a decline in the death rate while the birth rate remains high
Causes
First-  improvements in food supply brought about by higher yields as agricultural practices
Second- significant improvements in public health that reduced mortality

5. STAGE THREE
 Population towards stability through a decline in the birth rate.
Factors: Previously discussed reasons
Not require so many children to be born to ensure a comfortable old age.
Increasing urbanization changes the traditional values
Increasing female literacy and employment
Improvements in contraceptive

6. STAGE FOUR
Characterized by stability. In this stage the population age structure has become older
Fertility rate falls well below replacement and population decline sets in rapidly

7. Demographic Transition Model