90% of the energy is used up between levels, and the remaining 10% stays in the tissues to be passed on.
The answer you are looking for i believe is "Increased Biodiversity"
Decomposers can recycle dead plants and animals into chemical nutrients such as carbon and nitrogen that are released back into the soil, air and water as food for living plants and animals. So, decomposers can recycle dead plants and animals and help keep the flow of nutrients available in the environment
