In the diagram below,how do nutrient and energy flow differ? 
A) Energy flow is one-way,whereas nutrients are recycled.
B) Energy is recycled,whereas nutrient flow is one-way.
C) Only about 10 percent of energy flows from trophic level to trophic level.Nutrient flow is 100 percent from trophic level to trophic level.
D) Energy flows only to primary producers and decomposers,whereas nutrients flow only to secondary consumers and decomposers.
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