Question

why does blood appear red in colour ?​

Answer 1

Answer:

It's red because of the red blood cells (hemoglobin). Blood does change color somewhat as oxygen is absorbed and replenished. But it doesn't change from red to blue

Explanation:

Answer 2

Answer:

It has content which is called haemoglobin

Explanation:

haemoglobin means iron and protien when this conten mixes it form a red color

Extra point - if haemoglobin is low in our body it can cause death also