- Over 6.8 billion people live on the planet right now.
- 14,000 births per hour
- 90% of this population growth takes place in the developing countries of Africa , south and east asia , and latin america.
- Increasing by over 80 million
- it took 12 years to reach 7 billion
- Life expectancy : the average number of years to be lived by a group of people born in the same year.
- Life expectancy of swaziland : (31.9 =total men=31.6 women =32.2
- Crude birthrate : number of births per 1000 of the population
- Crude death rate : number of deaths per 1000 of the populaion
- Rate of natural increase is produced by subtracting the death rate from the birth rate, then dividing by 10.
- Net migration rate is the difference between the number of persons entering and leaving a country during a year.
- an excess of persons entering the country is net immigration
- an excess of persons leaving the coountry is net emmigration
push forces
- civil war
- enviromental degradation
- unemployment
- religious or ethnic persecution
- better economic oppurtunity
- better health services
- religious freedom
- political freedom
- total fertility rate is the average number of children born per woman.
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