How come O2 and CO2 are considered as waste?
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Answered by
1
Its a stupid question which doesn't matter much both o2 and co2 are important for life on earth.
Answered by
0
Both o2 and co2 have there own use they can not be called waste
O2 is used by animals (for combustion and also by plants , respiration,etc) and co2 is used by plants for producing o2
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