1. Depletion Of The Ozone Layer
... in developing countries. To monitor ozone depletion on a global level in 1991, NASA launched the seven-ton Upper Atmosphere Research Satellite. Orbiting the Earth at an altitude of 372 miles. the spacecraft measures ozone variations at different altitudes and is providing the first complete pictures of upper level chemistry. Because of other measures taken, emissions of ozone-depleting substances ... 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 taken, t...
- Word Count: 2746
- Approx Pages: 11
- Grade Level: High School