Question

If jacques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?

Answer 1

Hey Mate
ANS: It is very dangerous for Jacques to hold his breath while ascending from the bottom of the lake to surface as he can die due to suffocation .

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Answer 2

 If Jacques were holding his breath, then air would be unable to enter or leave his lungs. As he ascends to the surface, the air in his lungs would expand, like the air in the bubble, and his lungs would have to stretch outward to hold this increased volume, which would be extremely unsafe.
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