jynanana jynanana

06-05-2022
Biology

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46. Yawning may be caused by
A. high oxygen concentration in the blood.
B. high lactic acid concentration in the blood.
C. high carbon dioxide concentration in the blood.
D. high urea concentration in the blood.

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AdrianRosado0984 AdrianRosado0984

06-05-2022

None of these seem to be correct, but it seems c is due to a disproved myth that essentially is the only thing close to an answer.

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