It pumps the blood in and out of the heart. If I remember right I think that’s it.
The answer to your question would be an average healthy adult body is made up of 60% water.
Answer:
Good hygiene lowers your risk for diseases and illnesses commonly spread through viruses and bacteria. Your hands come into contact with bacteria every time you cough, use the restroom, touch your pet, or touch surfaces, such as stair railings, used frequently by others
Explanation:
You don’t feel pain, they can show inside of the human body in a easy and effective way.