Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

What is life? There are more than 100 answers to this basic question
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Monge-Nájera, J. (2022). What is life? There are more than 100 answers to this basic question. Revista De Biología Tropical, (9). Retrieved from


Like the COVID viruses that inspired this image, the Mona Lisa is not alive, but, 500 years ago, the substrate of the Mona Lisa was a living thing, a beautiful tree growing in northern Italy. When did it stop fitting the definition of life? What is life? Where is the border between the living and the inert?

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