Reptiles, by drawing their body heat directly from the Sun rather than burning calories to generate it, can survive on ten percent of the nourishment that a mammal of similar size would normally require
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Arather than burning calories to generate it
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Brather than the generation of body heat by burning calories
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Cand not from generating it by burning calories
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Dinstead of by burning calories for generating it
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Einstead of body heat generated by burning calories
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