Demographic transition test

In class today we reviewed what was going to be on the test. Some of the things are the stages of the Demographic transition stage one, two, three, four and five stage one is low growth, stage two is high growth, stage three is moderate growth, and stage four is low growth. Most of human history was spent in stage one but today no country is in stage one most are in stage two. A country moves from stage two to stage three when the CBR begins to drop rapidly, a society enters stage three when people have fewer children. A country reaches stage four when the CBR declines to a point where it reaches CDR and the NIR approaches zero. It is also going to be on Birth and Death rate, Natural increase, Total population, Natural increase and Natural decrease.