The main constituent of hemoglobin is_____. A. Chlorine B. Iron C. Calcium D. None of these 💾 Save the Page as PDF: 📥𝐃𝐨𝐰𝐧𝐥𝐨𝐚𝐝 𝐍𝐨𝐰! Related Read more articles Previous PostWhat is the main component of bones and teeth? Next PostThe main function of the kidney is_____. If the aforementioned Answer is Wrong. Leave a Reply with an authentic source.Cancel reply