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why is humans blood red?

  1. profile image46
    camalaxposted 7 years ago

    why is humans blood

    why is the average human body red?

  2. john.jackson profile image73
    john.jacksonposted 7 years ago

    The blood (including the straw-coloured fluid, plasma) is made up of roughly 45% red blood cells. This is what gives it its colour. The amount of platlets and white blood cells is negligable in the scheme of things. Without red blood cells the blood would appear yellow / orange. Hope this helps!

  3. n.pady profile image56
    n.padyposted 7 years ago

    The presence of hemoglobin makes it red.

  4. MickS profile image74
    MickSposted 7 years ago

    because it is iron based.  I've heard that lobsters have blueish blood because it is based on copper.

  5. saanj H profile image76
    saanj Hposted 6 years ago


    Human blood is red due to the existence of a pigment called hemoglobin. hemoglobin contains more of iron. If a person suffers from anemia, it means that the iron levels have depleted thereby reducing the hemoglobin levels. Anemia leads to weakness, paleness.