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J. K. Summers, Auteur ; L. M. Smith, Auteur ; J. L. Case, Auteur ; R. A. Linthurst, AuteurNatural ecosystems perform fundamental life-support services upon which human civilization depends. However, many people believe that nature provides these services for free and therefore, they are of little or no value. While we do not pay for [...]
Article
J. K. Summers, Auteur ; L. M. Smith, AuteurA sustainable world is one in which human needs are met equitably and without sacrificing the ability of future generations to meet their needs. Human well-being is described by four primary elements-basic human needs, economic needs, environmen[...]
