Ozone layer is mainly made up of:

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(a) Ozone gas — The ozone layer is mainly made up of ozone gas. It is a layer of the Earth's atmosphere which is found at an altitude of 18-35 km in the stratosphere. It is made up of three molecules of oxygen. It protects humans on earth form the ultraviolet rays which comes from the sun.

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(B) Carbon dioxide gas

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(C) Nitrogen gas

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(D) Hydrogen gas

Ozone layer is mainly made up of:

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