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Which one of the following substances is not excreted by the human body?

a. carbon dioxide
b. saliva
c. urea
d. salt ​

2 Answers

2 votes

Answer:

the anwer is C. urea is the only one the is not a part of human

User Bikram Karki
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Saliva is not excreted by the human body.

Carbon dioxide is excreted by respiration.

Urea is excreted by urine.

Salt is excreted by sweat.

User Opsidao
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