Why should one crustacean, which has an extremely complex mouth formed of many parts, consequently always have fewer legs; or conversely, those with many legs have simpler mouths?
Zergatik dauka, ondorioz, atal anitzez osaturiko aho zeharo konplexua duen krustazeo batek beti-beti hanka gutxiago, edo alderantziz, hanka asko dutenek aho xumeagoak?