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.
Answer:
This is just creating a new generation of smokers.
Explanation:
In this generation, e-cigarettes only make people want to buy more. They are cheaper and last longer.
#StayDrugFree #NoSmoking :)
