composting(The natural biological decomposition of organic material in the presence of air to form a humus-like material. Controlled methods of composting include mechanical mixing and aerating, ventilating the materials by dropping them through a vertical series of aerated chambers, or placing the compost in piles out in the open air and mixing it or turning it periodically)
alicyclic compound(Any substance composed of two or more unlike atoms held together by chemical bonds characterized by straight-chained, branched or cyclic properties)