Composting(堆肥) Composting is the controlled biological decomposition of organic matters such as food and yard wastes into humus, a soil-like material Q Composting is nature's way of transforming organic waste (such as kitchen vegetable scraps, soiled paper and yard trimmings)into new soilComposting （堆肥） ◆ Composting is the controlled biological decomposition of organic matters, such as food and yard wastes, into humus, a soil-like material. ◆ Composting is nature's way of transforming organic waste (such as kitchen vegetable scraps,soiled paper and yard trimmings) into new soil