★ All About Blood Quiz
What body system is the blood in our bodies a part of?
A. Digestive System
B. Circulatory System
C. Skeletal System
D. Excretory System
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What do red blood cells do?
A. Carry carbon dioxide to the rest of the body from the lungs, while taking oxygen back to the lungs to be exhaled
B. Fights of infections and bacteria
C. Makes our blood red
D. Carry oxygen from the lungs to the rest of the body, while taking carbon dioxide back to the lungs to be exhaled
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