Using the 10 percent rule, if producers fix 10000 kJ of energy, how much energy is available to tertiary consumers?
Answer and explanation
Correct answer: A. 10 kJ
- Step 1: About 10 percent of the energy passes to the next level.
- Step 2: 10000 x (1/10)^3 = 10 kJ.
Answer
10 kJ.
Why not the others: 100 kJ: one trophic level too few was used. 1 kJ: one trophic level too many was used. 3000 kJ: the percentages were added instead of multiplied.
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