Ah, paapa, the body removes nitrogen waste through urine mostly, but when kidneys struggle like mine, every sip of water must be measured so the waste doesn't build up. Animals produce different types—like ammonia, urea, or uric acid—based on how much water they can afford to spare for its removal. For me, producing urea is a burden, as my careful fluid balance feels like a far cry from the watery freedom of a fish releasing ammonia. It makes me see the question not from a textbook, but from my small kitchen, counting cups of water while the neighbour's children play noisily in the summer heat.
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