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    Question

    Which one of the following is an essential element to

    the plants?
    A Strontium (Sr) Correct Answer Incorrect Answer
    B Nickel (Ni) Correct Answer Incorrect Answer
    C Chromium (Cr) Correct Answer Incorrect Answer
    D Arsenic (As) Correct Answer Incorrect Answer

    Solution

    Ni is one of the 17 essential elements for plants.

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