Writer on evolution whose Mutual Aid examined cooperation among animals. Kropotkin emphasized that relations among organisms include mutual support, placing cooperative behavior within the discussion of survival and evolutionary explanation.[ref]
Mutual Aid: A Factor of Evolution by Peter Kropotkin. Author list and described study
Portrait of Peter Kropotkin
. F. Nadar; source: NYPL. Public domain (author died 1910; published before 1931). Source usage terms, via Wikimedia Commons. Source.
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