Someone who drinks a lot of alcohol and can’t stop.
<h3>ANSWER:</h3>
The DNA contained within the cells of the body is damaged.
<h3>EXPLANATION:</h3>
The ‘random events’ theory states that external and spontaneous mutations are responsible for the damage to the DNA that is contained within the cells of the body. Over a period of time, this damage makes the repair process inefficient and may also lead to cancerous cell production.
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.