Illustrates how the study of plant and animal life in the unusual and relatively unchanging environment of the cave community provides biologists with important data for understanding some of the mechanisms of adaptation and evolution of species.
Encyclopedia Britannica, 331 N. LaSalle St., Chicago, IL 60610, Phone: (312)347-7159, Toll-free: 800-323-1229, Fax: (312)294-2104, URL: http://www.britannica.com
Available on VHS
Running time 13 minutes.
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