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units of measurement of energy supplied by food.
(also called homeostatic control) the self-regulation and maintenance of a constant stable...
a clear, colourless solution of hydrogen chloride (HCl) in water. It is a strong and highly...
cells that are formed during secondary growth by the vascular cambium ring just to the inside of...
the process whereby substances dissolved in the blood (such as H+ ions, nitrogenous waste and...