We do come across the remain of plants and animals as we travel through our woods and fields. Some we are unable to see because what is left is covered by leaf-litter (the dead parts of trees which are annual contribution from the productivity of the forests). Others escape oureyes because they are discolored by the processes of dying out，and the very odors of death are masked by the smells of new and different life. In the topics, areas of constant warmth and moisture, the decomposers and scavengers work in greater numbers, more swiftly，and efficiently. The same processes are at work on both plants and animals in the seas as well as on thelands. Life recycles almost 100 percent of life; very rarely does a body, or a small part ofa body, escape recycling for long. Even man's carefully buried past generations eventually are reached by the powers of decay - of life.