9-15-09

Today we covered the Population Pyramid and we did a Test!! (I think i did well)

Here are some of my notes from the Population Pyramid:

Age: population pyramids visually; present the population of a particular country broken down by age
Gender: population pyramids are split. One side presents the number of males in a particular population; the other reflects the number of females within the same population
Young and Old Population: The global average 30% , low is 17% (Europe); high of 42% (Africa); high number indicates great potential for future growth.
Life expectancy: average number of years a person is expected to live; affected by many factors.