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9 February, 17:49

Which statement best describes the function of the

respiratory passageways of a human?

A) They permit digestive end-products to make

contact with body cells.

B) They permit exchange between the external

atmosphere and the circulatory system.

C) They transport gaseous cellular wastes from

body cells to the lungs for excretion.

D) They regulate the amount of ammonia and salt

dissolved in body fluids.

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Answers (1)
  1. 9 February, 21:15
    0
    B) They permit exchange between the external atmosphere and the circulatory system.
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