Question

what is ozone hole? how has it been formed in some parts of the upper atmosphere ​

Answer 1

In the Stratosphere, the ultraviolet light causes the formation of ozone. The reaction includes sunlight and oxygen molecules. Solar ultraviolet radiation splits oxygen molecules, creating two very reactive atoms of oxygen. These are then joined to oxygen molecules to form ozone.

Answer 2

Answer:

ozone hole or Ozone depletion occurs when chlorofluorocarbons (CFCs)—formerly found in aerosol spray cans and refrigerants—are released into the atmosphere. These gases, through several chemical reactions, cause the ozone molecules to break down, reducing ozone's ultraviolet (UV) radiation-absorbing capacity.

Ozone gas is continuously formed by the action of UV rays on molecular oxygen, and also degraded into molecular oxygen in stratosphere. ... UV rays react with CFCs releasing Cl atoms. These Cl atoms degrades ozone.

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