Commercially available chemical fertilizers contain the same nutrients and micronutrients as organic fertilizers such as manure and composted garden clippings. Plants have tiny root hairs that absorb nutrients, and whether the source of the nutrients is organic or chemical is irrelevant to the plant's ability to take in the nutrients. Nevertheless, organic fertilizers are better for the health of the plant than are chemical fertilizers alone.
Which of the following, if true, would most strongly support the position above?
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AThe nutrients in organic fertilizers are slowly released to the plant over time, rather than being absorbed by the plant immediately.
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BIn organic fertilizers, the natural combination of nutrients with other natural materials makes the nutrients more usable by the plant than nutrients found in chemical fertilizers.
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CPlants often must be provided with nutrients because naturally occurring nutrients in the surrounding soil are depleted or washed away over time.
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DThe typical gardener can't easily know the exact amount and type of nutrients in an organic fertilizer such as manure.
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EChemical fertilizers produced by the leading manufacturer contain nutrients that are no harder for the plants to absorb than those provided by the competitor's chemical fertilizer.
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正确答案: B