the fractal model of Geoffrey West and colleagues. This model justified the exponent by the fractal shape of the resource distribution networks in organisms, such as the circulatory or respiratory systems. Measuring the basal rate in organisms is a delicate and time consuming experimental task. As metabolic measurements increased in more animals, the fractal model began to show more and more discrepancies. Thus, in some animal groups such as small birds or insects, the exponent 3/4 does not fit. And even in mammals, for which Kleiber’s law was conceived, the data show a notable divergence from the theoretical law. Now the authors of an article recently published in Scientific Reports,

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Sciences of the Queen Mary University of London ), Enric Valor (Department of Thermodynamics of the University of Valencia) and Andrés Moya (Institute of Integrative and Systems Spain WhatsApp Number List Biology-UV / CSIC in the Science Park), have found the piece that completes the puzzle from a theoretical model of Astrophysics. “During the writing of the book ‘Fractals and Chaos’, in which we talked about Kleiber’s law, we realized that the fractal model of West and colleagues did not fit. The thermal explanation seemed more natural, but it was necessary to take into account the energy part that is not dissipated as heat ”, says Fernando Ballesteros. “Vicent and I plugged this into the thermal model and saw that the data fit perfectly with our theory. Andrés

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immediately realized that our model was a trade off, an evolutionary exchange, and together we perfected it. Enric solidified the thermal model after the trade off, Scientists propose a compromise between passive caloric dissipation and minimal energy expenditure for cell maintenance as a solution. Not all the energy that an organism consumes is transformed into heat, part of it is used for cell division, synthesizing proteins … that is, to make the organism function and maintain. If all the energy consumed were transformed into heat, in effect the consumption would respond to a 2/3 exponent, but then we would not speak of an organism but of a stove. On the other hand, if all the energy were consumed efficiently, the consumption would be directly

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