EntityQ25537688· pop 11· linked from 217 articlesshadeSign in to savedark area in which sunlight or other incoming light is blockedConnectionsnatural resourceEntityresource depletionEntityresource warEntitywaterEntityplantEntitytreeEntityrainEntityfoodEntitylifeEntityforestEntityenergyEntitymetalEntityfloodEntityiceEntityphosphorusEntitywoodEntityphotosynthesisEntitysoilEntitymineralEntitycarbohydrateEntityCategoriesLightShading