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UPSC Prelims 2011Question 9Environment

The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole ?

Options

  1. (a)Presence of prominent tropospheric turbulence; and inflow of chlorofluorocarbons
  2. (b)Presence of prominent polar front and stratospheric clouds; and inflow of chlorofluorocarbons
  3. (c)Absence of polar front and stratospheric clouds; and inflow of methane and chlorofluorocarbons
  4. (d)Increased temperature at polar region due to global warming

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