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♻️  Unit 8: Aquatic and Terrestrial Pollution

3.9 Demographic Transition

#population

#industrialization

#totalfertilityrate

#agestructurediagrams

⏱️  1 min read

written by

Karla Jauregui Sandoval

karla jauregui sandoval

Harrison Burnside

harrison burnside

(editor)

May 18, 2020


Demographic Transition Model

Diagram Courtesy of Max Roser

https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2Fdemo.JPG?alt=media&token=1031c171-20de-499c-9ed9-41e8bdb703b3

Stage 1 ➪ High CBR, High CDR, low growth rate 

Stage 2 ➪ High CBR, lowering CDR, high growth rate 

Stage 3 ➪ lowering CBR, lowering CDR, lowering growth rate 

Stage 4 ➪ low CBR, low CDR, low/negative growth rate 

Pre-industrial Stage 

Transitional Stage 

Industrial Stage 

Post-industrial Stage 

Birth rate is high to compensate for high infant mortality rate. Poorer countries are in this stage.  

Industrialization begins. Access to food and improved healthcare lowers death rate. 

Death rate drops due to improved medicine, and modernization. Mostly developed countries are in this stage.

Birth rate drops to equal zero population growth. If Birth rate falls below death rate than population will decrease 

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