Nondepleting resources

Nondepleting resources are better than depleting resources. 

Nondepleting resources are better than depleting resources. Green chemistry principle seven is, Use of renewable feedstocks (Anastas and Warner, 1998). As a practical matter, for a resource to be considered renewable, it must not only be capable of being replaced or restored, but also such replacement must occur within one human generation. Renewal on this timescale keeps the costs of depletion from being externalized to future generations. 

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