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(D) According to the $10\%$ Law of energy transfer in an ecosystem,only $10\%$ of the energy is transferred from one trophic level to the next,while $

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$5000$

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(D) According to the $10\%$ Law of energy transfer in an ecosystem,only $10\%$ of the energy is transferred from one trophic level to the next,while $90\%$ is lost as heat.Let the energy at the producer level $(T_1)$ be $E$.$T_1$ (Grass) = $E$$T_2$ (Grasshopper) = $E 	imes 0.1$$T_3$ (Frog) = $E 	imes 0.1 	imes 0.1 = E 	imes 0.01$$T_4$ (Snake) = $E 	imes 0.1 	imes 0.1 	imes 0.1 = E 	imes 0.001$Given that the energy at the fourth trophic level $(T_4)$ is $5 \, kJ$:$E 	imes 0.001 = 5 \, kJ$$E = 5 / 0.001 = 5000 \, kJ$Therefore,the energy available at the producer level is $5000 \, kJ$.

In the given food chain,suppose the amount of energy at the fourth trophic level is $5 \, kJ$,what will be the energy available at the producer level (in $, kJ$)?
Grass $\to$ Grasshopper $\to$ Frog $\to$ Snake $\to$ Hawk

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In the given food chain,suppose the amount of energy at the fourth trophic level is $5 \, kJ$,what will be the energy available at the producer level (in $, kJ$)?Grass $\to$ Grasshopper $\to$ Frog $\to$ Snake $\to$ Hawk