Fig. Model to show mechanism of breathing. The figure shows a plastic bottle whose bottom has been removed. A tube has been passed by making a hole in its lid. To the forked ends of this tube are attached two deflated balloons. The bottle is sealed in such a way that it becomes air-tight. During breathing
A) there is no change in chest cavity
B) there is no change in the composition of gases inhaled and exhaled
C) breathing is a continuous process
D) all the above are correct
Correct Answer: C
Solution :
breathing is a continuous process
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