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Geography

Explain the factors responsible for depletion of Ozone in atmosphere.

Atmosphere

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Answer

The factors responsible for depletion of Ozone in atmosphere are-

  1. Chemicals like Chlorine and Bromine
  2. Chlorofluorocarbon gases used in refrigerators, aircraft and air conditioners. CFC compounds escape into the atmosphere and finally break down in the stratosphere, producing Chlorine atoms which destroy the Ozone layer.
  3. Sulphur dioxide given out during volcanic eruptions, speeds up destructive chemical reactions.
  4. Solar storms consist of coronal mass ejections and solar flares associated with explosions on the surface of the Sun. They also cause Ozone layer depletion.
  5. Human activities also result in Ozone layer depletion. Due to bitterly cold Antarctic winter, the stratospheric ice clouds promote the production of chemically active Chlorine and Bromine. This leads to Ozone destruction when sunlight returns in the Antarctic spring.

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