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Subject :NSO    Class : Class 7

When a person breathes in, what happens to the diaphragm and to the rib cage?

Diaphragm Rib cage
A Becomes flatten Moves downwards and inwards
B Becomes flatten flatten Moves outwards and upwards
C Becomes more curved Moves downwards and inwards
D Becomes more curved Moves outwards curved and upwards


Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3:

Class : Class 8
Answer is B

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