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.

摘要废弃是人类为身需要的产，如菜籽饼来菜籽取，果渣来水果取汁，鸡粪来规模化养鸡。