NATURAL RESOURCE A resource that is not made by humans. Examples include virgin forests, rainfall, guano, coal, oceans, sunlight and wildlife. ARTIFICIAL RESOURCE A resource that is made by humans. Examples include tree plantations, artificial snow, anhydrous ammonia, gasoline, cisterns, neon light, and catfish farms. Main Entry: nat·u·ral Pronunciation: 'na-ch&-r&l, 'nach-r&l Function: adjective Etymology: Middle English, from Middle French, from Latin naturalis of nature, from natura nature Date: 14th century 1 : based on an inherent sense of right and wrong <natural justice> 2 a : being in accordance with or determined by nature b : having or constituting a classification based on features existing in nature Main Entry: natural resource Function: noun Date: 1870 1 plural : industrial materials and capacities (as mineral deposits and waterpower) supplied by nature Main Entry: ar·ti·fi·cial Pronunciation: "är-t&-'fi-sh&l Function: adjective Date: 14th century 1 : humanly contrived often on a natural model : MAN-MADE <an artificial limb> <artificial diamonds> http://www.m-w.com/cgi-bin/dictionary
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