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<p>to obtain minerals.</p>

<p>Finally, although mineral and elements are in many ways synonymous, minerals are only <a href="page.php?w=bioavailability">bioavailable</a> to the extent that they can be absorbed.  To be absorbed, minerals either must be soluble or readily extractable by the consuming organism.  For example, molybdenum is an essential mineral, but metallic molybdenum has no nutritional benefit.  Many molybdates are sources of molybdenum.</p>

<p><big>Essential chemical elements for humans</big></p>
<p>Twenty chemical elements are known to</p><p>
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