Identify and describe the four stages of the demographic transition model.
Answers
Answer:
The model has four stages: pre-industrial, urbanizing/industrializing, mature industrial, and post-industrial.
In the pre-industrial stage, crude birth rates and crude death rates remain close to each other keeping the population relatively level.
During the urbanizing/industrializing stage, however, improvements in health care delivery and medicines, coupled with investments in sanitation and infrastructure, bring a sharp drop in the crude death rates. Note that crude birth rates remain roughly the same during this stage, thus prompting an increase in the population rate.
During the mature industrial stage, crude death rates continue to decline, and it is theorized that economic development within the society bring incentives to bring the crude birth rates down slightly, however, the overall population continues to climb in an exponential j-curve.
In the post-industrial stage, the population growth begins to level off because the crude birth rates have reduced to closely follow the crude death rates.