By the early 1800s, however, scientists such as John Dalton recognized that the atmosphere was in fact composed of several chemically distinct gases, which he was able to separate and determine the relative amounts of within the lower atmosphere. ... In fact, atmospheric gases are often divided up into the major, constant components and the highly variable components, as shown in Table 1 and Table 2. ... Although both nitrogen and oxygen are essential to human life on the planet, they have little effect on weather and other atmospheric processes. ... Though the greenhouse effect is sometimes ...

• Word Count: 3528
• Approx Pages: 14
• Grade Level: High School

The differences of the facts were caused by this intriguing global warming that alarmed all the people in the world. ... Fact or Fiction An Inconvenient Truth presents ex vice- president Al Gore and his passion to help save our planet. ... Gore distinguishes between fact and fiction. ... Gore focuses on the main issues that affects us as a whole by concentrating on the facts and setting politics aside.. ... Gore presents horrifying facts, yet hope is still visible. ...

• Word Count: 6155
• Approx Pages: 25
• Grade Level: Undergraduate

There is no doubt this atmospheric buildup of carbon dioxide and other greenhouse gases It's well accepted by scientists that greenhouse gases trap heat in the Earth's atmosphere and tend to warm the planet. ... The effects of global warming and a changing climate will not be felt equally across our planet. ... However, if future climate changes occur as rapidly as scientists predict, plants and animals may not be able to react quickly enough to survive. ...

• Word Count: 3240
• Approx Pages: 13
• Grade Level: Undergraduate