Why might the Birth rate decrease/ be low
Why might the birth rate be high/ increase
Stage 1 population pyramid
• Birth rate - high • Death rate - low • Population growth - zero • Structure - life expectancy low Mostly young people
Stage 2 population pyramid
Stage 3 population pyramid
Stage 4 population pyramid
Stage 5 population pyramid
Natural increase
When the birth rate is higher than the death rate, more people are being born than dying, the population grows
Natural decrease
Death rate is higher than the birth rate
Why is death rate decreased/ low
- Medical advances
Why is death rate increased/ high
-