Micronutrients
<p><b >Micronutrients</b> are <a href="http://en.wikipedia.org/wiki/Nutrient" title="Nutrient" >nutrients</a> required by humans and other living things throughout life in small quantities to orchestrate a whole range of physiological functions, but which the organism itself cannot produce.<sup id="cite_ref-0" class="reference" ><a href="http://en.wikipedia.org/wiki/Micronutrient#cite_note-0" >[1]</a></sup> For people, they include <a href="http://en.wikipedia.org/w/index.php?title=Dietary_trace_mineral&action=edit&redlink=1" class="new" title="Dietary trace mineral (page does not exist)" >dietary trace minerals</a> in amounts generally less than 100 milligrams/day<sup class="Template-Fact" >[<i><a href="http://en.wikipedia.org/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed" >citation needed</a></i>]</sup> - as opposed to <a href="http://en.wikipedia.org/wiki/Macromineral" title="Macromineral" class="mw-redirect" >macrominerals</a> which are required in larger quantities. </p>
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The <b >microminerals</b> or <b >trace elements</b> include at least <a href="http://en.wikipedia.org/wiki/Iron" title="Iron" >iron</a>, <a href="http://en.wikipedia.org/wiki/Cobalt" title="Cobalt" >cobalt</a>, <a href="http://en.wikipedia.org/wiki/Chromium" title="Chromium" >chromium</a>, <a href="http://en.wikipedia.org/wiki/Copper" title="Copper" >copper</a><sup id="cite_ref-1" class="reference" ><a href="http://en.wikipedia.org/wiki/Micronutrient#cite_note-1" >[2]</a></sup>,<a href="http://en.wikipedia.org/wiki/Iodine" title="Iodine" >iodine</a>, <a href="http://en.wikipedia.org/wiki/Manganese" title="Manganese" >manganese</a>, <a href="http://en.wikipedia.org/wiki/Selenium" title="Selenium" >selenium</a>, <a href="http://en.wikipedia.org/wiki/Zinc" title="Zinc" >zinc</a> and <a href="http://en.wikipedia.org/wiki/Molybdenum" title="Molybdenum" >molybdenum</a>. Micronutrients also include <a href="http://en.wikipedia.org/wiki/Vitamin" title="Vitamin" >vitamins</a>, which are <a href="http://en.wikipedia.org/wiki/Organic_compound" title="Organic compound" >organic compounds</a>required as nutrients in tiny amounts by an organism.<sup id="cite_ref-2" class="reference" ><a href="http://en.wikipedia.org/wiki/Micronutrient#cite_note-2" >[3]</a></sup></p>