Question

why is blood that flows from the lungs to the heart bright red rather than dark red?​

Answer 1

Answer:

The blood that flows from the lungs to the heart is rich in oxygen. The lungs enrich the blood with oxygen. This blood is called oxygenated blood and is bright red in colour as compared to blood with low oxygen and more carbon dioxide (deoxygenated blood).

Explanation:

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Answer 2

Answer:it’s fresh

Explanation:I guess you could say the blood is normally brighter because it is fresh while the blood in our hearts are a bit old/long lived