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From The Trials of Life, episode Friends and Rivals (BBC)

Appears on these pages

  • Reciprocal Altruism

    Reciprocal altruism, as described by Robert Trivers (Trivers, 1971), is a behavior whereby one...

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current20:34, September 6, 2013Thumbnail for version as of 20:34, September 6, 201303:27480 × 269 (16 KB)Jenkainz (wall | contribs)created video


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