Go through the 5 different stages of the demographic transition model.
1)BR+DR=High and fluctuating.PGR=0,PS=low.(2)BR=high,DR=Rapid Fall,PGR=Very high,PS=Rapid Increasing.(3)BR=Rapid Decrease,DR=Slow Decrease,PGR=High,PS=Increasing.(4)BR+DR=low and fluctuating,PGR=0,PS=High (5)BR=Decrease,DR=Low,PGR=Negative,PS=Fall
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