1. Depletion Of The Ozone Layer
... in altitude. All human activities take place in the troposphere. The next layer, the stratosphere, continues from 10 to 50 kilometers. Most commercial airline traffic occurs in the power part of the stratosphere. Most atmospheric ozone is concentrated in a layer in the stratosphere, about 15 to 30 kilometers above the Earth's surface. Ozone is a molecule containing three oxygen atoms. ... 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 proces...
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- Approx Pages: 11
- Grade Level: High School