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Excretion
the process by which organisms get rid of waste products which result from chemical process which occur in living cells
Secretion
the process by which organisms produce substances which are useful to the body, by glands
Egestion
removal of indigestive materials from the body
Homeostasis
maintenance of constant internal environment
Mohaissack answered the question on October 5, 2017 at 13:59
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