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Ozone is a gas, and its molecule consists of three oxygen atoms. It has the property of absorbing part of the ultraviolet radiation (UV-B) coming from the sun. It is mainly present in the stratosphere at 20 km to 40 km altitude, where it forms the so-called ozone layer.

Ozone is also found in the air at ground level. It is then considered to be a pollutant that is harmful, especially to human health and to vegetation

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14y ago

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