Word: amargosa
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Dates: during 1940-1949
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That color changes with environment is strikingly illustrated by the varieties of U.S. horned toads. A brightly splotched variety lives in Arizona's Painted Desert, a drab single-toned variety on the drab soil of Oregon, a white variety on the white alkali soil of the Amargosa Desert, a black variety on the West's black lava belts. Such adaptations sometimes occur before the very eyes of biologists: during the industrialization of Germany a black moth replaced a former pale variety in factory areas...
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