Unit 4: Sustainability - Development of Unsustainable Lifestyles

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  • Sustainability
    • Resource Sustainability
      • Use > replacement = resource depletion
      • Abundant resources may take a long time to deplete so are treated as inexhaustible
      • Resource depletion needs to be anticipated so we can develop new technology
    • Life-Support System Sustainability
      • Human activities may seem sustainable but may reduce life-support system abilities
    • Development of unsustainable lifestyles
      • Humans deliberately increased biological productivity  to increase carrying capacity
      • Productivity increased to point where sedentary lifestyle is possible
      • As human population and our impact increased our sustainability levels have decreased
      • Many natural processes allow Earth to recover from damaging activities

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