Answer:
The Hepatitis B virus
Explanation:
The Hepatitis B virus is known as a bloodborne virus, because it is transmitted from one person to another via blood or fluids contaminated with blood. The virus attacks the liver/organ. It can cause scarring of the liver, liver cancer, liver failure, and death.
A Pacemaker, A small battery-operated device that helps the heart beat in a regular rhythm .
Resting heart rate or in abbreviation RHR
If you don’t believe me enough search on google “what does resting heart rate mean?”
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