depletion

Approximately 90 per cent of all ozone is produced naturally in the stratosphere. While ozone can be found through the entire atmosphere, the greatest concentration occurs at an altitude of about 25 km. This band of ozone-rich air is known as the "ozone layer". Ozone depletion is the term...

Ozone layer lies mostly in the stratosphere, 12-15 kms above the earth’s surface. It protects plants and animals from much of sun’s harmful ultraviolet radiation by filtering-This protective layer has depleted and a hole caused over Antarctica because of CFCs and halons

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