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scZoUnD [109]
3 years ago
5

Why is the blood that flows from the lungs toward the heart a brighter red than the blood that flows the other direction?

Biology
2 answers:
tatiyna3 years ago
3 0
There is more oxygen near the lungs, because fresh oxygen goes into the lungs.
zlopas [31]3 years ago
3 0
B. the presence of oxygen-bound hemoglobin makes it bright red
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