@prefix envthes: . @prefix skos: . @prefix owl: . @prefix dc: . @prefix xsd: . envthes: skos:prefLabel "EnvThes"@en ; a owl:Ontology, skos:ConceptScheme . envthes:20935 skos:prefLabel "variable"@en ; a skos:Concept ; skos:narrower envthes:21422 . envthes:21422 skos:exactMatch ; skos:prefLabel "photosynthetic rate"@en ; dc:modified "2023-01-13"^^xsd:date ; skos:inScheme envthes: ; skos:definition "[TO] The total amount of carbon fixed by the plant per unit time and is measured by determining the changes in CO2 concentration over a plant leaf in a glass enclosure."@en ; skos:broader envthes:20935 ; dc:created "2016-10-12"^^xsd:date ; a skos:Concept ; skos:scopeNote "MS Academic Keywords"@en ; dc:creator "0000-0003-2195-3997"@en .