Explanation:
Each hemoglobin molecule is made up of four heme groups surrounding a globin group, forming a tetrahedral structure. ... There are four iron atoms in each molecule of hemoglobin, which accordingly can bind four atoms of oxygen. Globin consists of two linked pairs of polypeptide chains.
True, anyone who exercises can or is physically fit
The symptoms of CTE<span> generally do </span>not<span> present until years or decades after the brain trauma occurred or after </span>one<span> stops actively playing contact sports. While most</span>concussion<span> symptoms resolve within a few weeks, the symptoms </span>can<span> last for months or, in severe cases, even years.</span>
Aerobic exercise
It helps work out your heart
