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31-10-2019
Biology

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Approximately twenty-five elements
1.occur naturally on earth
2.are in the human body
3.are in the perlodic table of elements

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benderle benderle

31-10-2019

Potassium, carbon, sulfur, hydrogen, oxygen, nitrogen, calcium, magnesium, sodium, phosphorus, iron, zinc, silicon, fluorine, boron, cobalt, manganese, chromium, and some others

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