| http://www.w3.org/ns/prov#value | - It is possible that Algeo and Scheckler somewhat underestimated the pre-Devonian role of non-vascular terrestrial photosynthetic and other organisms in enhancing weathering (Algeo and Scheckler, 1998; Horodyski and Knauth, 1994; Yapp and Poths, 1992).
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