REM 100 Study Guide - Final Guide: Renewable Resource, Cogeneration, Waste Heat

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A resource that is replaced by natural processes e. g. timber, fish. When exploited a renewable resource tends to recover towards its carrying capacity. If the rate of harvest = the rate of recovery the resource will be stable at a lower level of abundance. The rate of harvest is then a sustainable yield. However, if the rate of harvest exceeds the rate of renewal the resource will become depleted sometimes termed mining". A resource that is not replaced by natural processes on a humanly relevant time scale e. g. minerals, fossil fuels. Of course, matter is not destroyed, but it is dissipated by mining and use. Material resources are usually extracted from regions of relatively high concentration, but even with re-cycling, some material cannot be recovered and eventually the material becomes more dispersed in the environment. In the case of fuels, energy cannot be recycled; it is dissipated as low grade heat that is eventually lost into space.

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