What type of organism needs to be involved in the process of decay and what do they do to help this process?

Decomposers, primarily bacteria and fungi, are the key organisms involved in the process of decay. They break down dead organic matter by secreting enzymes that digest complex organic compounds into simpler substances. This process recycles nutrients back into the ecosystem, enriching the soil and facilitating the growth of plants. Without decomposers, organic waste would accumulate, and the availability of essential nutrients would diminish.