Finite: Coal, Oil, Gas, Metals, Minerals, Aluminium, Nuclear Power, Plastics, Synthetic Rubbers, Non-finite: Water, Plants, Trees, Solar Power, Geothermal Energy, Wind Power, Cotton, Wool, Wave Power, Hydro Electric, Biomass, Bio-plastics, Natural Rubbers,

Finite & Non-finite resources

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恢復自動保存: ?