Ozone depletion is greatest near:

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SSC GD Previous Paper 16 (Held On: 18 Feb 2019 Shift 2)
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  1. tropics
  2. equator
  3. poles
  4. oceans

Answer (Detailed Solution Below)

Option 3 : poles
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The correct answer is Poles.

Important Points

  • The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun.
  • The ozone layer is typically thicker over the poles than over the equator.
  • The ozone layer exists in the stratosphere, a layer 10 to 50 km above the Earth’s surface.
  • The reasons for ozone depletion are a wide range of industrial and consumer applications, mainly refrigerators, air conditioners (hydrochlorofluorocarbons (HCFCs), chlorofluorocarbons (CFCs)), and fire extinguishers.
  • Ozone depletion is greatest at the South Pole (Antarctica).

Key Points

  • This severe depletion creates the so-called “ozone hole”.
  • The Negative Effects of the ozone hole are certain types of skin cancers, eye cataracts, and immune deficiency disorders.
    • UV rays also affect plant growth, reducing agricultural productivity.
  • The international community established the Montreal Protocol on ozone-depleting substances in 1987, to address the destruction of the ozone layer.
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