Explain why scuba divers should not hold their breath as they ascend to the surface.
The scuba divers should not hold their breath as they ascend to the surface. This could be explained on the basis of Boyle’s Law which states that volume of a gas increases with decrease in pressure at constant temperature. In the depth of water, scuba divers experiences additional 1 atm pressure due to the weight of water above him/her. The pressure used by the driver from the pressure regulator must be equal to the atmospheric pressure, otherwise driver could not able to inhale the air. If the driver inhale lungful of air and swim quickly to the surface of water, then the the pressure decreases and the volume of the air in lungs would increase and which results a dangerous situation.Therefore, with the increase in volume, the driver would not able to hold the air all way to the surface.