Question

why is the colour of blood is red and why only red colour why not other???​

Answer 1

Answer:

bcoz of the presence of haemoglobin

Answer 2

Answer:

Hlo mate.........

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.