Ozone Depletion - National Geographic

Learn about the causes and effects of Ozone Depletion. Learn about the causes and effects of Ozone Depletion https ... When CFCs reach the upper atmosphere, ...

Fluorine - Wikipedia for Schools

The halogens react readily with fluorine gas as does ... Fluorite mining (the main source of fluorine) ... they are able to reach the upper reaches of the atmosphere, ...

Energy and the Environment | US EPA

This microsite will provide general information on energy resources and their environmental effects; how electricity is delivered and used; and related tools and EPA ...

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