1. Depletion Of The Ozone Layer
... . Records have been established spanning several decades that detail normal ozone levels during these natural cycles. Each natural reduction in ozone levels is followed by a recovery. Recently, however, convincing scientific evidence has shown that the ozone layer shield is being depleted well beyond changes due to natural processes. Thinning of the ozone layer has been caused by a variety of ozone ... to investigate the effects of various chemicals on the ozone layer, particularly CFCs, which contain chlorine. Potential impacts of other chlorine sources were examined also. Chlorine from...
- Word Count: 2746
- Approx Pages: 11
- Grade Level: High School