<P> A renewable resource is a natural resource which replenishes to overcome resource depletion caused by usage and consumption, either through biological reproduction or other naturally recurring processes in a finite amount of time in a human time scale . Renewable resources are a part of Earth's natural environment and the largest components of its ecosphere . A positive life cycle assessment is a key indicator of a resource's sustainability . </P> <P> Definitions of renewable resources may also include agricultural production, as in sustainable agriculture and to an extent water resources . In 1962 Paul Alfred Weiss defined Renewable Resources as: "The total range of living organisms providing man with food, fibres, drugs, etc ...". Another type of renewable resources is renewable energy resources . Common sources of renewable energy include solar, geothermal and wind power, which are all categorised as renewable resources . </P>

What do you mean by renewable and nonrenewable resources
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