1b. Distinguish between a population projection and population momentum (original)

Population projections are predictions about future population based on trends in fertility, mortality, and migration. Population is the tendency for population to grow despite a fall in the birth rate or fertility levels. From the definitions we can see that population projections are only predictions of population growth, while population momentum is an increase in the population even if birth rates and fertility rates fall - there is no predictions within population momentum.

Definitions taken from IB