Excretion

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Excretion is the process bi which waste products o metabolism an ither non-uisefu materials are eliminatit frae an organism. In vertebrates this is primarily carried oot bi the buffs, neers an skin.[1]

References[eedit | eedit soorce]

  1. ↑ Beckett, B. S. (1987). Biology: A Modern Introduction. Oxford University Press. p. 110. ISBN 0-19-914260-2.
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