Ozone is a naturally occurring gas found in the atmosphere where it absorbs most of the sun's ultraviolet light - invisible rays which are harmful to both plant and animal life.

Credits

Image: Ozone Layer by Paul Aningat

Information sourced from:

Encyclopaedia Britannica (2014), Montreal Protocol [online], Available from: http://www.britannica.com/event/Montreal-Protocol [accessed 10/07/2015].

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