由于“赤潮”的影响,一条4Kg重的杂食性海洋鱼死亡,假如该杂食性

由于“赤潮”的影响,一条4Kg重的杂食性海洋鱼死亡,假如该杂食性的食物有1/2来自植物,1/4来自草食鱼类,1/4来自以草食鱼类为食的小型肉食鱼类,按能量流动效率20%计算,该杂食性鱼从出生到死亡,共需海洋植物

A.120㎏           B.160㎏           C.60㎏            D.100㎏

答案

B

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