text: most common metal is calcium\noxygen, carbon, hydrogen, and nitrogen are all nonmetals\n\nOxygen (65%) \nCarbon (18%) \nHydrogen (10%) \nNitrogen (3%) \nCalcium (1.5%) \nPhosphorus (1.0%) \nPotassium (0.35%) \nSulfur (0.25%) \nSodium (0.15%) \nMagnesium (0.05%) \nCopper, Zinc, Selenium, Molybdenum, Fluorine, Chlorine, Iodine, Manganese, Cobalt, Iron (0.70%) \nLithium, Strontium, Aluminum, Silicon, Lead, Vanadium, Arsenic, Bromine (trace amounts)