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1. Why does the fish die when it is taken out of water?
Gills have a lot of , so they may easily absorb that is dissolved in the water. When fish are taken out of the water, their supply is cut off since they are unable to absorb and breathe oxygen from the atmosphere. Hence, they die when it is taken out of water.
2. How do astronauts breathe when they go beyond earth’s atmosphere?
Astronauts can only breathe in space if they have their own supply of oxygen. They can produce their own oxygen by splitting hydrogen and oxygen from water using sun .
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