When energy is lost in the ecosystem?

Energy is lost in an ecosystem primarily through processes such as respiration, heat generation, and waste production. When organisms consume energy, not all of it is converted into biomass; a significant portion is released as heat during metabolic processes. Additionally, energy is lost at each trophic level, with only about 10% typically transferred from one level to the next, leading to a decrease in available energy as it moves up the food chain. This loss of energy limits the number of trophic levels in an ecosystem.