Posted: July 16th, 2016
The four most abundant elements in the human body are a. carbon, hydrogen, oxygen, and iron. b. carbon, hydrogen, oxygen, and nitrogen. c. calcium, hydrogen, sodium, and potassium. d. carbon, oxygen, magnesium, and zinc. e. carbon, sulfur, calcium, and potassium.
Place an order in 3 easy steps. Takes less than 5 mins.