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Why is blood that flows from the lungs t...

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

A

Oxygen makes it red.

B

Carbon dioxide makes it red.

C

Gastric juices produce the red colour of the blood.

D

The lungs add a pigment (dye) to blood as it flows through them.

Text Solution

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The correct Answer is:
A
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