Answer:
Blood absorbs and distributes heat throughout the body. It helps to maintain homeostasis through the release or conservation of warmth. Blood vessels expand and contract when they react to outside organisms, such as bacteria, and to internal hormone and chemical changes.
If it is rounded to the hundredths place, it would be 18.19 if it is rounded to the tenths place, it will be 18.2 and if it is rounded to the whole number, it will be 18.