1. Depletion Of The Ozone Layer
... instituted was to ban the use of CFCs. Although this was incorporated, CFC molecules already located in the lower atmosphere will journey into the upper atmosphere and cause more depletion. After this fact was discovered, many more methods were put to use. Many treaties were signed to help aid ... Hydrochlorofluorocarbons were put to use because they cause less damage to the ozone layer. NASA also helped in the effort by launching the seven-ton Upper Atmosphere Research Satellite into orbit in 1991. It measured ozone variations at different altitudes. Due to this and many other measures ...
- Word Count: 2746
- Approx Pages: 11
- Grade Level: High School