The four questions from that day on GutGuesser. The answers aren't here: you find them by playing.
Animals · Source: Zoología, peso medio de Hippopotamus amphibius
Human body · Source: Polisomnografía, duración total de fase REM
Space · Source: Planck 2018, parámetros cosmológicos
Food · Source: Colecciones de germoplasma de Malus domestica
We don't publish the answers. Every day there are four new questions, one minute, and whoever gets closest wins.
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