Population Pyramids Cont...

Today we continued our discussion on population pyramids and compared them to the demographic transition model.   A developing nation can be found in stage 2 and 3 of the DTM and more developed countries are in stage 4.  There is a proposed stage 5 of the model in which a population's CBR is lower than its CDR and indicates the population is shrinking.  The population pyramid on the left is typical of a stage 2 developing country, where the population has a wide base (very large young population) and a small middle and very small old population (indicate low life

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