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26 June, 07:40

The respiratory system is responsible for the exchange of oxygen with which gas?

A. Nitrogen

B. Water vapor

C. Hydrogen

D. Carbon dioxide

+3
Answers (2)
  1. 26 June, 11:04
    0
    I think the answer is D
  2. 26 June, 11:20
    0
    The answer would be D. Carbon dioxide
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