★ Human Body and Pathogens Quiz
What is the main function of the respiratory system?
A. To break down food
B. To fight infections
C. To take in oxygen and release carbon dioxide
D. To take in water
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What is the structure and function of the bladder?
A. A thin tube, filtration of waste from the blood
B. A pair of tubes, waste transport
C. A muscular sac, storage of liquid waste
D. Bean shaped organs, filter blood
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