This is because iron is used to make a protein called hemoglobin. This protein helps blood cells carry oxygen around the body.
Answer:
The correct answer is B respiratory system
Explanation:
Respiratory system of our body play a significant role in the inhalation of oxygen into and exhalation of the waste product known as carbon dioxide from our body.
Respiratory system basically composed of diaphragm and respiratory muscles.The volume of diaphragm increases during inhalation and decreases during exhalation. This is called the elastic nature of lungs which helps in efficient gas exchange.
....meiosis.., however, I'm not sure that the zygote goes through division. After the two gametes intercept and FORM the zygote, I'm pretty sure the zygote doesn't deconstuct from a dipliod back into a hapliod
