Question

why is excretion necessary? name the common excretory substances
in our body

Answer 1

to throw out unnecessary waste nirogeneos products out of body
urea ,uric acid
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Answer 2

All organisms need to perform the life processes to prevent extinction, or dying out. ... Excretion is the removal of waste products by an organism. Some waste products are sweat, urine, and carbon dioxide. Without the excretory system many problems can develop in the body.f excretion does not take place then all the toxic substance would remain in the body for a long period of time which can cause fatal death

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