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Body Systems › View

How does the circulatory system work with the digestive system?

A. Blood is used to build muscle strength.

B. Food is broken down in the bloodstream

C. Blood carries nutrients throughout the body.

D. Food waste is filtered by the heart and blood vessels.

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Respiratory and Urinary › View

Alveoli increase the surface area in the lungs to allow…

A. More nutrients to be absorbed

B. You to breathe faster

C. You to breathe slower

D. More O2 and CO2 to exchange

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