geology_4-1

geology_4-1 - Chapter 1: fundamental concepts cont....

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Chapter 1: fundamental concepts cont. Sustainability of resources: Possible for the renewable resources such as air, water, fish, forest, domesticated stock and wildlife, agricultural products For non-renewable resources, such as fossil fuels and minerals, sustainability is possible by: 1. Conservation/Recycling to extend their availability 2. Finding substitution ( alternative ) for the material Earth’s system and changes: Earth : A dynamic system Two engines behind its dynamics: Internal and external heat sources Four interconnected subsystems: lithosphere, atmosphere, hydrosphere, and biosphere the f our subsystems mutually adjust Global environmental prob. Deforestation Soil erosion Water and air pollution Desertification Pollution due to mining (minerals, coal, oil) Overuse of groundwater and surface water resources (e.g., Aral Sea) System concept: A system is any portion of the universe that can be isolated from the rest of the
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geology_4-1 - Chapter 1: fundamental concepts cont....

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