This is what makes the blood red.It carries oxygen and other nutrients in the blood (moghebinlo)

Sagot :

Answer:

hemoglobin

Explanation:

Hemoglobin is a protein in your red blood cells that carries oxygen to your body's organs and tissues and transports carbon dioxide from your organs and tissues back to your lungs. If a hemoglobin test reveals that your hemoglobin level is lower than normal, it means you have a low red blood cell count (anemia).