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    What do you mean by ozone depletion?

    Class 12th Biology

    Asked By Ansh Jangra


    • Ozone layer depletion, is simply the wearing out (reduction) of the amount of ozone in the stratosphere. Unlike pollution, which has many types and causes, Ozone depletion has been pinned down to one major human activity.
    • Depletion means the disintegration or loss of something. Ozone is what
      makes up one of the protective layers of the planet Earth which shields
      organisms from the full impact of the Sun. Ozone depletion is the loss
      of the protective layer between the Sun and Earth.
    • ozone is made by the composition of threee molecules of oxygen! as the CFCs strike the ozone it splits ozone into molecules of oxygen! (two atoms of oxygen)
    • The ozone layer is a layer in Earth's atmosphere which contains
      relatively high concentrations of ozone (O3). This layer absorbs 93-99%
      of the sun's high frequency ultraviolet light, which is potentially
      damaging to life on earth.[1] Over 91% of the ozone in Earth's
      atmosphere is present here.[1] It is mainly located in the lower portion
      of the stratosphere from approximately 10 km to 50 km above Earth,
      though the thickness varies seasonally and geographically.
      Ozone depletion Main article: Ozone depletion NASA projections of stratospheric ozone concentrations if chlorofluorocarbons had not been banned.

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