ICSE BoardEnglish MediumSTD 9BIOLOGYThe Respiratory System1 Mark
Question
What is wrong in the statement "We breathe in oxygen and breathe out carbon dioxide".
✓
Answer
We inhale air which contains more oxygen and less carbon dioxide. We exhale air which contains more carbon dioxide and less of oxygen. Therefore, the statement "We breathe in oxygen and breathe out carbon dioxide" is wrong.
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