Which one of the following is the key function of the kidneys______?

A.  Removal of excess carbon dioxide from

blood

B.  Pumping blood to the heart

C.  Removal of urea and other nitrogenous

wastes from blood

D.  Removal of excess water from blood.

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Vitamin E is stored in ?

A   Arteries B   Skull C   Adipose Tissues D   None of these