The correct answer is none of them are biogenic. The periodic table of elements invented by the abiogenic theorist Mendeleev is a table of abiotic elements which preceded all life in the solar system you moron.Let me ask you this. Which of the following elements is biological ?
Oxygen, Carbon, Hydrogen, Nitrogen, Calcium, Phosphorus, Potassium, Sulfur, Chlorine, Sodium, Magnesium, Iron, Cobalt, Copper, Zinc, Iodine, Selenium, Fluorine.
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