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. Author manuscript; available in PMC: 2020 Aug 3.
Published in final edited form as: Natl Sci Rev. 2016 Dec 11;3(4):470–494. doi: 10.1093/nsr/nww081

Figure 3:

Figure 3:

Relationship of the Human System within the Earth System, not separate from it (after Daly and Farley [2003]). The Earth System provides the sources of the inputs to, and the sinks that absorb the outputs of, the Human System.