Preferred Term:
elementary flow
Definition:
Material or energy entering or leaving the system being studied, which has been drawn from or emitted to the environment without previous or subsequent human transformation.
Concept Schemes:
NALT Full
Broader Concept:
URI:
https://lod.nal.usda.gov/nalt/137791
Download this Concept:
RDF/XMLCreated 2010-10-02, last modified 2014-02-18