Waste derived from human activitirs, such as rapeseed placentiform from the extraction of rape oil;fruit faeces from the extraction of fruit juice;chicken excrement from the scall farming of chickens.

摘要是人类为满足自身需要的产，如菜籽饼自于油菜籽取油，自于水取汁，鸡粪自于规模化养鸡。