RANGE OF GEOGRAPHIC DISTRIBUTIONS
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FIGURE 3.9 The wide-ranging distribution of the house sparrow, Passer domesticus, contrasts sharply with the distributions of endangered species such as the mountain gorilla, Gorilla beringei beringei, and the Bay checkerspot butterfly, Euphydryas editha bayensis.
(Robert Maier/Animals Animals/All rights reserved) (Josh Hull/U.S. Fish and Wildlife Service) (Brent Stirton/Getty Images)