... the beginning of the Industrial Revolution, atmospheric concentrations of carbon dioxide have increased by 30%, methane has almost doubled, and nitris oxide has risen 15%. 2 2. A warming trend of about 1 degree Fahrenheit has been recorded since the late 19th century. 1 3. In the US., 6.6 metric tons of greenhouse gases are emitted per person every year. 5 a. This is a 3.5% increase between 1990-1997. 4. The 20th ... ...

• Word Count: 1278
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... may say that global warming is not only harmful for the world. That's sure. Global Warming also helps the earth. Without global warming, the Earth's temperature would drop 60-degree Fahrenheit. Life could not exist if there was no natural greenhouse. Because of greenhouse effect is so that all creatures can live and breathe. We can say that the greenhouse has ... ...

• Word Count: 558
• Approx Pages: 2
• Grade Level: High School

... may say that global warming is not only harmful for the world. That's sure. Global Warming also helps the earth. Without global warming, the Earth's temperature would drop 60-degree Fahrenheit. Life could not exist if there was no natural greenhouse. Because of greenhouse effect is so that all creatures can live and breathe. We can say that the greenhouse has ... ...

• Word Count: 555
• Approx Pages: 2
• Grade Level: High School