Chemical element in the central of chlorophyll
Name the chemical element is central in the chlorophyll molecule?
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The chemical element which is central in the chlorophyll molecule is magnesium. One atom of magnesium is existed in the center of an amalgam of 8 nitrogen-containing carbon rings.
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The stage of meiosis where cells become haploid
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Name the three main kinds of nitrogen wastes excreted by living-beings?
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