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Uses of oxygen

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Oxygen is combined with hydrogen to form a hot flame used in welding metals
Used for breathing by hospital patients
Used by mountain climbers and undersea divers for breathing
Used in fuel and fuel cells
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Air enriched with oxygen is used in hospital by patients with breathing problems.
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Air enriched with oxygen is used in hospital by patients with breathing problems.
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For climber

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Combustion- air enriched with oxygen supports burning
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For burning
For germination
For breathing 
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Is used in hospitals
Is used by the diver in deep sea
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For burning
For germination
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Used to burn fuels eg petroleum
Oxygen is used to remove impurities from metal

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Helps in breathing
Used in germination
 Used in combustion
Used in decomposition

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