why do divers and mountaniners carry oxygen cilenders wiyh them

As height increases the atmospheric pressure decreases. Therefore when we move up the oxygen available for breathing becomes less and so the mountaineers need to carry oxygen cylinder to ensure sufficient oxygen supply.

All divers are humans and humans cannot breathe underwater. As we can only breathe in air in gaseous form and not in liquid as present in water and hence they carry oxygen cylinders with them.

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As height increases the atmospheric pressure decreases. Therefore when we move up the oxygen available for breathing becomes less and so the mountaineers need to carry oxygen cylinder to ensure sufficient oxygen supply.

All divers are humans and humans cannot breathe underwater. As we can only breathe in air in gaseous form and not in liquid as present in water and hence they carry oxygen cylinders with them.

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