8.2

• Population - All organisims of the same species living in the same area at the same time
• Lag Phase - a Period of population growth where the population adapts to the new enviorment and growth is slow
• Log Phase - When the growth rate of a population increases overtime
• Stationary Phase - When the growth rate of a population has slowed to zero as the carrying capacity has been reached.
• Carrying Capacity - Maximum size of a population that the enviorment can handle in terms of food and other resources
• Birth Rate - the number of briths per thousand of population each year
• Death rate - The number of deaths per thousand of population each year
• Natural Increase - the difference between the birth rate and death rate
• Factors effecting brith rates

  • In farming economies families tend to be larger as labour is needed
  • Many soical and political factors affect the use of birth control
• Migration - the movement of people into or out of a certain region.
• Push Factors

  • Drought
  • Famine
  • Poverty
  • Poor Services
  • Desertification
• Pull Factors

  • Good supplies of food
  • Well Paying Jobs
  • Good roads
  • Good hospitals and education
• Impact of a small population

  • Fewer jobs staffed, increasing the working age
  • Increases need for taxes