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Wednesday, July 9, 2008 |
Wednesday, July 9, 2008 |
Photo: First Lungless Frog FoundThe trait, though rare in nature, may have evolved because of the amphibian's habitat of oxygen-rich, fast-moving water—which might more easily carry away a frog with air-filled lungs. Photo courtesy David Bickford, National University of Singapore
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ADVERTISEMENTNATIONAL GEOGRAPHIC'S PHOTO OF THE DAY |
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