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Respiration in Organisms — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceRespiration in Organisms2 Marks
Question
Whenever we feel drowsy or sleepy, we start yawning. Does yawning help us in anyway?
✓

Answer

Yes, yawning helps us by increasing the intake of oxygen and removing excess carbon dioxide from the blood.
It also helps to refresh the brain and make us more alert.

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