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The most important disadvantage is that due to inventions the concentration of co2 increases and due to this increase in concentration the temperature of earth increases and its also help in ozone depletion.
1 5 1
come in chat box i will help u dont here ok
please help here only, I don't know where the chat box is, I am new
i messeged u naa 
check it n plz do it fast its too late ok
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