Respuesta :

emilygpaquette

Answer:

Blood is needed to keep us alive. It brings oxygen and nutrients to all the parts of the body so they can keep working.

Explanation:

The volume of blood in a human body is approximately 7% of body weight.

Ellis08

Scientists estimate the volume of blood in a human body to be approximately 7 percent of body weight. An average adult body with a weight of 150 to 180 pounds will contain approximately 4.7 to 5.5 liters (1.2 to 1.5 gallons) of blood.