13 Answer(s)
Poornima Sathe
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Posted 6 year ago Poornima Sathe

Actually, the blood is said to be blue in colour but it becomes blue when it comes in contact to oxygen!

Vickey
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Posted 6 year ago Vickey

Due to presence of homeoglobin

Gyendup sada
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Posted 6 year ago Gyendup sada

Due to present of hemoglobin

Chandra Kumar Rai
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Posted 6 year ago Chandra Kumar Rai

Due to the presence of hemoglobin

Dhana Pradhan
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Posted 6 year ago Dhana Pradhan

Due to the presence of humoglobin.

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