In a food chain involving a primary producer, a primary consumer as well as a secondary consumer, the sharing of trophic energy is in the form that the

A. the primary consumer has more energy than the primary poducer
B. secondary consumer takes up all the energy contents of the primary consumer
C. energy is shared equally between the three groups of organism
D. secondary consumer gets only a small portion of the energy contained in the primary producer  

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Correct Answer: D