in this ecosystem, if the trophic level 1 organisms have 10,000,000 units of available energy (j), which…

in this ecosystem, if the trophic level 1 organisms have 10,000,000 units of available energy (j), which trophic level will have 10,000 units (j) of available energy? trophic level 5 trophic level 4 trophic level 2 trophic level 3

in this ecosystem, if the trophic level 1 organisms have 10,000,000 units of available energy (j), which trophic level will have 10,000 units (j) of available energy? trophic level 5 trophic level 4 trophic level 2 trophic level 3

Answer

Explanation:

Step1: Recall energy - transfer rule

In an ecosystem, about 10% of energy is transferred from one trophic level to the next, and 90% is lost as heat.

Step2: Calculate energy at each trophic level

Let the energy at trophic level 1 be $E_1 = 10000000$ J. The energy at trophic level 2, $E_2=E_1\times0.1 = 10000000\times0.1 = 1000000$ J. The energy at trophic level 3, $E_3=E_2\times0.1=1000000\times0.1 = 100000$ J. The energy at trophic level 4, $E_4=E_3\times0.1 = 100000\times0.1=10000$ J.

Answer:

Trophic level 4