Punjab PSEB Matric Health & Physical Education Practice Questions - Punjab School Education Board (PSEB) Matric Class 10 Health And Physical Education (Code 08) Exam

Why does breathing rate rise during hard exercise?

To reduce oxygen need to zero To take in more oxygen and remove more carbon dioxide produced by active muscles Because bones need more air inside them Only to cool the ears

Correct Answer:

To take in more oxygen and remove more carbon dioxide produced by active muscles

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