Energy in ecosystems moves towards entropy, as all energy is eventually converted to heat.
Entropy is a measure of the amount of disorder or randomness in a system, and it tends to increase over time in isolated systems. In ecosystems, energy flows through various trophic levels, from producers (such as plants) to consumers (such as herbivores, carnivores, and omnivores). However, at each trophic level, only a fraction of the energy is passed on to the next level, while the rest is lost as heat due to metabolic processes and other factors.
As a result, energy becomes increasingly dispersed and less available for use as it moves through the ecosystem. Ultimately, all energy in the ecosystem is converted to heat and lost to the surroundings, increasing the entropy of the system. This is why ecosystems require a constant input of energy, usually in the form of sunlight, to maintain their organization and functioning.