Article: Excretion

Excretion

Post by: Adaora10
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        EXCRETION    This is the elimination of waste metablolic products in the body.       Excretory waste products  This includes carbon(IV) oxide, water and nitrogeneous waste. The nitrogeneous wastes are urea, uric acid and ammonia.   *Urea is excreted by mammals and dogfish.   *Uric acid which is insoluble in water is excreted by birds, reptiles and insects.   *Ammonia is excreted by protozoa and bonyfish.Nitrogeneous waste are by-products of protein. ...

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