Drug use during pregnancy can lead to multiple birth defects
Answer:
Rehab would help an addict decrease their addiction.
Ebola virus is the answer
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.