What is the role of the digestive system?

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A To circulate blood
B To break down food and absorb nutrients
C To control body temperature
D To help in breathing

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Answer: B. To break down food and absorb nutrients

The digestive system breaks food into simple substances and absorbs the nutrients into the blood. Blood is circulated by the heart, not the digestive system.

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What is the role of the digestive system?

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