What happens to most of the energy in the ecosystem?

1) In any ecosystem, the ultimate source of energy is the sun.
2) chlorophyll in plants absorb light energy which is converted during photosynthesis.
3) Energy that it produce dcrease from one level to another by feeding
4) This flow of energy is non-cyclic . energy is released as heat to the environment as it flows through the ecosystem .This organism neither returns to the same system nor the organisms which produces it, therefore it cannot be recycled in the ecosystem
5) The dead organisms and excreted materials contain trapped energy. This is released by the activity of decomposers, the rest of the energy is loss as heat.