What happens if the percentage of oxygen in the air reaches 70%?

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​Please find below the solution to the asked query     

If the percentage of oxygen in the air reaches 70%, then it would become very difficult to extinguish fires because oxygen supports combustion. This could lead to heavy destruction around us. Also, there would be plenty of oxygen available for humans and other animals.
 
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it fresh air
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sdnbvm i
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The air cycle goes down.
 
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Then things will burn at a very fast rate. it will be difficult to control a fire. plants will start dying because they need nitrogen for protein synthesis. animals and humans will have plenty of oxygen to breathe. 
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DEAR LAKSHITV AND SHASHAN PLEASE DON POST THIS TYPES OF ANSWERS
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