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By coincidence today I stumbled on a relevant example, i.e. mention of the vital interdependence of Galapagos tortoises and prickly pear cacti similar to the dangers of decline and extincion described in the Atlantic article. The mention is at: https://link.springer.com/content/pdf/10.1007%2Fs12052-007-0007-6.pdf ... which is the shortest, but still thorough, description of Eldredge's dual hierarchy schema. Eldredge has dealt with the extinction (and related) problems in several of his books. _________________________________________________________ Full posting guidelines at: http://www.marxmail.org/sub.htm Set your options at: http://lists.csbs.utah.edu/options/marxism/archive%40mail-archive.com
