Question

Human blood is red coloured .give Reason​

Answer 1

Explanation:

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.

Answer 2

Human blood is red because hemoglobin which is carried in the blood and functions to transport oxygen is iron-rich and red in colour .