Measuring Population

Today we looked at measuring the population. Crude birth rate is the number of births per 1000 of the population. Crude death rate is the number of deaths per 1000 of the population. Rate of natural interest or RNI is produced by subtracting the death rate from the birth rate and it gives the annual natural growth rate - in % form - for a country/region. Net migration rate is the difference between the number of persons entering and leaving a country during a year. An excess of people entering into a country is immigration and an excess of people leaving is emigration. There are push and pull factors that persuade people to migrate. Push : civil war, environmental degradation, unemployment/underemployment, or religious/ethnic persecution. Pull : better economic opportunity, better health services, religious freedom, and political freedom.