Food chain is the process of of eaten and being eaten which involves the flow of energy.
Sun-plants-grasshopper-snake-egale.
As per to this rule, the 10% of transfer of energy is  transmitted from one trophic level to the next trophic level.
The rest of the energy is lost during transfer of energy and during respiration. The first trophic level has the maximum energy.
Thus, Sun-plants-grasshopper-snake-egale, show the flow of energy.
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