Answer:
no options but read below
Explanation:
Haemoglobin's primary role is to transport oxygen from the lungs to body tissues to maintain basic life functions. Without healthy red blood cells, your body can't get enough oxygen, and this can result in you feeling increasingly tired or exhausted.
ummm there already answered on the paper
Fat is much denser than carbohydrate in term of potential energy content. Contins 9.3 verses 4.1 kcal/g.
