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Clear summer day - PowerPoint PPT Presentation

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5-2. ozone layer

5-2. ozone layer. 5-1-1. Formation of Ozone Layer Ozone layer: A part of stratosphere (ca. 20km high) in which ozone concentration is relatively high The formation reactions O 2 + ?? uv (<240nm) ? 2O (R1) O + O 2 + M ? O 3 + M (R2) O 3 + ?? uv ? O 2 + O (R3) ? used in (R2) again

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5-2. ozone layer