Can World3 be simplified? This is a model of the global human ecology. Closed systems are defined for carbon and land. An open system is defined for non-renewable non-fossil fuels in which the sink is external. Energy is modeled as an open system with inflow from converters and outflow to various energy-driven human activities.
Model is in template form. Units are Tonnes (carbon or unspecified mineral), Tonnes per Year, Hectares, Hectares per Year.
Ready for input of real world values. --CB 24Feb16