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Step-by-step explanation:
The ozone layer is the part of the atmosphere in the stratosphere that contains O3 that absorbs a lot of UV light from the sun, protecting humans from it.
Answer: a layer in the earth's stratosphere at an altitude of about 6.2 miles (10 km) containing a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
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