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Food is digested in a quite complicated way which requires simple molecules to circulate in the body. |
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The body needs simple molecules in the blood to be absorbed in a way that is not very complex. |
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In order for the blood to make complex molecules simpler, food is usually digested in a complicated way. |
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Food consists of complex molecules turning into simple ones for the blood to absorb in an easy way. |
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For the blood to absorb complex molecules contained in food, the body needs to break them into simpler ones. |