The 'global warming' is due to
  • 1

    increase in glaciers

  • 2

     increase in carbon dioxide

  • 3

    decrease in carbon dioxide

  • 4

    increase in forestation

Answer:- 2
Explanation:-

'Global warming' is primarily a problem of too much carbon dioxide (CO2) in the atmosphere which acts as a blanket, trapping heat and warming the planet

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