Stage Two: This term refers to a stage in the Demographic Transition Model where birth rates are high and death rates begin to decline due to improvements in healthcare and sanitation.
Stage Three: This term refers to a stage in the Demographic Transition Model where birth rates start declining as society becomes more industrialized, urbanized, and people have access to better education and contraception.
Demographic Transition Model (DTM): This model is used by geographers demographers to explain how population changes over time based on birth rates, death rates, and economic development. It consists of five stages.