• Why is global population increasing?
• About 82 people added to the population
• RNI affects the doubling time
• Components of population growth:
• total fertility rate
• TFR exceeds five in subSaharan Africa while two or less in nearly all European countries
• IMR in developed nation: 5 per 1,000
• IMR in developing nation: 80 per 1,000
• IMR is the amount of children dying per birth
• Summary of spatial patterns
• Spatial developed countries lower rates of natural increase, crude birth, total fertility, infant mortality
• developing countries higher rates of natural increase, crude birth, total fertility, infant mortality
• population structure
• fertility and mortality vary not only spatially but also temporarily within a country 
• y-axis
• age cohorts typically grouped in year intervals 
• youngest displayed at bottom and oldest displayed at top
• x-axis
• percent male displayed to the left zero
• percent female to the right of zero
• sex ratio
• number of males per 100 females
• two demo graphic transitions