One hypothesis, according to Dr. Luis Zambrano, a professor of zoology at the National Autonomous University of Mexico, is that the environment in Lake Xochimilco had enough resources for the ...

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(AP Photo/Marco Ugarte) FILE - Ancestral floating gardens are visible next to new soccer fields on Xochimilco Lake in Mexico City, Oct. 20, 2024. (AP Photo/Felix Marquez, File) Axolotls scurry ...