Inactive Tutor answered • 06/05/18
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Carbon Dioxide. Respiration (breathing) is inhalation of Oxygen, and exhalation of Carbon Dioxide.
Chun L.
asked • 06/05/18Which exhaled gas is a waste product of respiration
i need his question to pass my test and this would be very helpful because this test is really hard for me.
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Inactive Tutor
06/05/18