1. Global Warming
The build-up of greenhouse gases in our atmosphere has been traced back to the Industrial Revolution, when we started to burn more fossil fuels. These fuels, which are burned to run automobiles, heat buildings, and power factories are responsible for about 98% of U.S. carbon dioxide emissions, 24% of methane emissions, and 18% of nitrous oxide emissions. ... It calls for reduced fossil fuel emissions by the year 2010. ... This is a real shame, considering our country emits one-quarter of the world's fossil fuels. ...
- Word Count: 640
- Approx Pages: 3
- Grade Level: High School