Whenkeepingducks,onehastoconsiderjusthowmanythelandwill...
問題詳情：Whenkeepingducks,onehastoconsiderjusthowmanythelandwillsupport.Generallytheruleis100ducksperhectare.Ifmorethanthisproportionisintroduced,thereisariskofcompactingthesoil,whichcanleadtomuddycond...