Bacteria break down the dead bodies of fish to release energy, which is then absorbed by other organisms in the ecosystem. This flow of energy is an example of the .

conservation of energy

Explanation:

In a typical aquatic ecosystem, energy flows through the system from one organism to another without being lost as they are converted from one form to another., ensuring energy is being conserved in the system. Bacteria, as decomposers, play a major role in conservation of energy as well as in the recycling of nutrients in an aquatic ecosystem. The energy released during decomposition is not lost, but absorbed into the ecosystem again by other organisms, which is an example of the conservation of energy. The energy is being conserved as the energy in the ecosystem remains constant and is being reused.