You can grow some gills by yourself by putting on some kinda mask, go underwater, chant "I wish to roam the seas and get away from all of war", then take off the mask and inhale a lot of water, you will feel like drowning but that will last only about 15 minutes after you inhale, don't resurface before it takes full effect and you stop feeling like you're drowning or it will reverse back to lungs, then you are free to roam the seas in either freshwater or saltwater (Bring flippers because you won't gain a tail, but you can easily learn how to swim underwater afterwards)
The water lifts up your weight when it is in water.So,the oxygen tanks feels lighter when they are in water
Because in space it is all made of carbon dioxide and no oxygen so people are not able to breath in space. The space suit allows you to breath in oxygen because there is an oxygen tank built inside.
they practice holding their breath trying to increase the time they can hold there breath, in fact david blaine recently held his breath for about 8 minutes i think. a few weeks later on ripley'd believe it or not a Russian held his for about 15 minutes. one secret how they can do this is DON'T SMOKE I heard david blaine held his breath for much longer than that. I was told that magicians like him train themselves by inhaling huge concentrations of pure oxygen from a type of oxygen tank before entering the water. They train to be able to take that much oxygen without blacking out. Then when they get a lightheaded feeling from all the extra oxygen to the brain, when they go underwater they start feeling normal again until the breath runs out.
About 30 to 40 seconds but with an oxygen tank it just depends on the tank
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so they can breath underwater
Not for a human. Some animals can, as you possibly already know. The only way a human is able to breath is by using an air tank, however, the human isn't producing the oxygen, the air tank is. So, if your question is "can humans breath underwater by themselves?" then no.
From a regulator attached to a scuba tank.
yes
The astronauts breath as they have an oxygen tank which they keep attached with their space suit.
Betas are labyrinth fish, meaning they use both their gills to gain oxygen from the water, and a labyrinth organ in their head that lets them breath from the air. They do not need an air bubbler, but they DO need filtration and properly heated water (80 to 86 degrees)
The longest time under water without any air what so ever is 10 minuets and 17 seconds
Underwater Hospital In a fire Outer space
they use oxygen mask to breath so they die in all the smoke
The water lifts up your weight when it is in water.So,the oxygen tanks feels lighter when they are in water
They probably wear scuba gear,flippers,a whole suit,and an oxygen tank.
Yes, because oxygen is a gas and water is a liquid. So their properties don't mix.