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shreyansh2010 from Prudence, New Delhi
Subject :NSO    Class : Class 4

Which of the following movements is a result of muscle action?

ASwallowing of food
BChewing action of the mouth
CMovement of food down the digestive system
DAll of these


Ans 1:

Kaustav Nath from Gurukul The School, Crossing Republick
Class : Class 5
The correct answer is option B.

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