Q.14. Which of the following substances are excreted by the lungs?
a) Oxygen and Nitrogen
b) Carbon dioxide and Water
c) Hydrogen and Salt
d) Nitrogen and Urine
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Q.14. Which of the following substances are excreted by the lungs?
a) Oxygen and Nitrogen
b) Carbon dioxide and Water
c) Hydrogen and Salt
d) Nitrogen and Urine
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Answer:
b) carbon dioxide and water