Are urination and excretment a kind of excretion?

2006-11-23 5:28 am
Are urination and excretment a kind of excretion?

What is the definition of excretion?

Can you give me some examples?

回答 (1)

2006-11-23 5:32 am
✔ 最佳答案
Excretion is the removal of metabolic waste.


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