Question

what provide red color in blood.​

Answer 1

Explanation:

Due to the presence of haemoglobin.

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Answer 2

Human blood is red because of the protein hemoglobin, which contains a red-colored compound called heme that's crucial for carrying oxygen through your bloodstream. Heme contains an iron atom which binds to oxygen; it's this molecule that transports oxygen from your lungs to other parts of the body.