Which point does the chapter make about "Machanism of breathing" in Digestive And Excretory System?
Machanism of breathing in human beings Fig.
○ All the movements are due to contraction of muscles.
○ Circulatory system circulates nutrients and oxygen to all parts of the body.
○ The required energy for movements and other activities is obtained from food.
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This matches the chapter's stated information about "Machanism of breathing". — Examisthan.com