Final answer:
In an ecosystem, energy not passed from level to level is mainly used for metabolism, growth, and repair by organisms at that level, while decomposers help in releasing energy back into the environment as heat.
Explanation:
Large amounts of energy are lost from the ecosystem as it flows through different trophic levels in the form of heat.
Energy not passed on from one trophic level to the next is mainly used for metabolism, growth, and repair by organisms at that level.
Decomposers play a crucial role in breaking down dead organisms and releasing energy back into the environment as heat.
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