new unit: Population and Migration

The issues surrounding population are pretty complex.  In order to understand them, we need to build a solid foundation.  We need to be able to define certain terms and concepts.  That is the purpose behind today's discussion, and the PowerPoint that comes with it (the link to this PowerPoint has been posted, as has the link to the indispensable CIA Factbook).

Essential terms include:

• life expectancy
• crude birth rate (CBR)
• crude death rate (CDR)
• developing nations
• developed nations
• rate of natural increase (RNI)
• net migration rate (NMR)
• immigration
• emigration
• push forces
• pull forces
• total fertility rate (TFR)