Biology for IGCSE & O level - Organisms And Their Environment (Section 5 - No. 3)
Why do food chains typically have a limited number of trophic levels?
Because there is too much energy loss at each level.
Because the decomposers take up all the energy.
Because there are not enough producers.
Because the higher levels get the majority of energy.
Explanation
As energy is lost at each trophic level, there isn't enough energy left to support many trophic levels.
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