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. 摘要废弃物是人类为满足自身需要的产物，如菜籽饼来自于油菜籽取油，果渣来自于水果取汁，鸡粪来自于规模化养鸡。