经过实验测定某种植物落叶中矿质元素的含量变化,甲元素含量明显

经过实验测定某种植物落叶中矿质元素的含量变化,甲元素含量明显少于落叶前,而乙元素为微量元素,且含量几乎不变。那么这两种元素依次最可能是

A.P和Mg          B. Ca和N          C.H和Fe        D.K和Fe

答案

D


解析:

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