This is because iron is used to make a protein called hemoglobin. This protein helps blood cells carry oxygen around the body.
Of the given possible statements, the one that best supports that a newly discovered species is that the animal's body temperature increased when the ambient temperature increased. An exothermic animal relies on eternal temperatures to keep warm and so a rise in ambient temperatures would cause a rise in internal temperatures of the animal. Therefore, the answer is a.
No the myelin covers bits of the cell
There doesn't seem to be a maximum number. Ultra high molecular weight polyethylene has around 500 thousand carbons that are linked together.
