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What are the major elements
Oxygen, Carbon, Hydrogen, Nitrogen
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What are the lesser elements
Calcium, Phosphorus, Potassium, Sulfur, Sodium, Chlorine, Magnesium, Iron
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What are the trace elements
Aluminum, Boron, Chromium, Cobalt, Copper, Fluorine, Iodine, Manganese, Molybdenum, Selenium, Silicon, Tin, Vanadium, Zinc
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