In a food chain consisting of four trophic levels, if the energy present in the top level is 48 kcal/m2/yr, how much energy do you expect in herbivores? (Use an energy transfer rate of 10%.)
A. 4,800 kcal/m2/yr
B. 4.8 kcal/m2/yr
C. 480 kcal/m2/yr
D. 48,000 kcal/m2/yr
E. 48 kcal/m2/yr
Answer: C
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