... "greenhouse gases" that include carbon dioxide, water vapor, and methane. It is also said that without the greenhouse effect, the entire plant would be much colder, by about 63 degrees Fahrenheit (35 degrees Celsius), than it presently is. In summary, scientists think rising levels of greenhouse gases such as carbon dioxide and methane in the atmosphere are contributing to global warming ... ...

• Word Count: 573
• Approx Pages: 2
• Grade Level: Undergraduate

... excess of 4,500 pounds per square inch. These tanks can withstand the blast of a full stick of dynamite, an attack with a .357 magnum pistol, and a surface temperature of 1,500 degrees Fahrenheit. (McAlister 166) Hydrogen is not as dangerous as people assume, but nonetheless, care must be taken when dealing with this powerful fuel. The fact that hydrogen is an everlasting substance ... ...

• Word Count: 1803
• Approx Pages: 7
• Has Bibliography
• Grade Level: Undergraduate