life expectancy- the expectated number of years of life remaining at a given age
japan- total population: 82.12 years country comparison to the world: 3  male: 78.8 years  female: 85.62
france- total population: 80.98 yearscountry comparison to the world: 8 male: 77.79 years female: 84.33
kenya- total population: 57.86 years country comparison to the world: 189  male: 57.49 years female:58.24
cuba- total population: 77.45 years country comparison to the world: 55  male: 75.19 years female: 79.85
united states- 78.11 years
afghanistan-44.3 years


crude birthrate-  is the nativity or childbirths per 1,000 people per year (in estimation review points).
japan- 7.64 births/1,000 population (2010 est.) country comparison to the world: 222
kenya- 36.64 births/1,000 population (2010 est.) country comparison to the world: 29
ethiopia-43.66 births
united states- 13.83 births
germany- 8.18 births/1,000 population (2010 est.) country comparison to the world: 220

^{crude death rate- the total number of deaths per year per 1000 people
Afghanistan- 17.83
 Kenya- 9.72 deaths/1,000 population (July 2010 est.) country comparison to the world: 67
japan-
 United States-8.38
 Japan-  9.54 deaths/1,000 population (July 2010 est.)country comparison to the world: 69Mexico- 4.8}RNI (rate of natural increase)- is the crude birth rate minus the crude death rate of a population


TFR (total fertility rate)- the number of kids that is born into 1 woman
divided (usually) per 1,000 inhabitants (considered on midterm population
Niger- 7.68 children born/woman (2010 est.) country comparison to the world: 1
 Afghanistan- 5.5 children born/woman (2010 est.) country comparison to the world: 13
 Japan- 1.2 children born/woman (2010 est.) country comparison to the world: 218
 United States- 2.06 children born/woman (2010 est.) country comparison to the world: 126
 Germany- 1.42 children born/woman (2010 est.) country comparison to the world: 196
to keep the same amount of people in this country the TFR has to be 2.1


net migration rate- is the difference of immigrants and emigrants of an area in a period of time, divided (usually) per 1,000 inhabitants (considered on midterm population


population pyramid-  also called an age structure diagram, is a graphical illustration that shows the distribution of various age groups in a human population (typically that of a country or region of the world), which normally forms the shape of a pyramid.

RNI( rate of ntural increase) birthrate minus deathrate.
 http://en.wikipedia.org/