------ prevents burning (air around us)

 

Dear Student,

CO2 prevents burning.
Carbon dioxide extinguishes fire by cutting off the supply of oxygen. carbon dioxide being heavier than air covers the fire and hence does not allow oxygen to come in the contact of flame. Since oxygen is required for the combustion, unavailability of oxygen results in the quenching of fire. 

Regards.

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DO NOT BURN PLASTIC
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do not throw plastics here there like in severes etc.
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What ????
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