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Respiration in Organisms — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceRespiration in Organisms2 Marks
Question
When you feel drowsy, does your breathing rate slow down? Does your body receive sufficient oxygen?
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Answer

When we feel drowsy, sleepy or tired, we yawn (i.e., open our mouth wide to take a long and deep breathe) because our breathing rate slows down and our body does not receive sufficient oxygen.

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