<span>The function of red blood cells in the
body is to transport oxygen from the lungs to the tissues. </span><span><span>Red blood cells </span>produce a protein called hemoglobin, which absorbs oxygen from the
lungs. Hemoglobin is also what gives blood its color. The function of white blood cells is to defend the body from various infections.
Hope this helps.
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If water was nonpolar, life as it exists now would be impossible. Water is the means by which ionic substances ( Fe^3+, Na^+, Ca^2+, K^+, etc) and polar molecules are distributed around and in the cells of organisms.
I think its option b, may carry out nitrogen fixation.
Lymphocytes produce antibodies - proteins<span> that recognize foreign substances and attach themselves to them.</span>