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… 9. OZONE DEPLETION I. Introduction 1. The Earth’s atmosphere is … which extends up to 350 kilometres from Earth. 2. Ozone, which has the chemical formula of “O3,” is a molecule … mainly in two regions of the Earth's atmosphere. Most ozone (approximately 90%) is found in the stratosphere. This …

… 1998 POPs Protocol 1998 Heavy Metals Protocol 1999 Ozone Protocol 1984 EMEP Protocol 1. Introduction Sulphur … http://leo.informea.org/terms/tropospheric-ozone 3. Protocols to the Convention The … of countries); (2) The same reduction as for (1) within a Tropospheric Ozone Management Area (“TOMA”) specified in …