Answer:
The answer is A! To transport oxygen/carbon dioxide and nutrients through the body
Explanation:
The blood travels through arteries and blood vessels to and from the heart
a minimum of 15 minutes.
the flow rate should be 0.4 gallons per minute
protozans is your answer thats why they say wash your hands before you eat or when you come home from a day outside cause the bad bacteria goes in your body and then many problems happen. and thats how sicknesses spread or diseases.
