what will happen if there is no oxygen in air? give any two points and Answer according to 5 Class student
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- The air pressure on the earth would drop 21 per cent and our ears would not get enough time to settle. Without oxygen, there would not any fire and the combustion process in our vehicles would stop. ... In between all this, the earth's crust, which is made up of 45 per cent oxygen, would completely crumble.
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