Though the major components of the atmosphere vary little today, they have changed dramatically over Earth's history, about 4.6 billion years. ... The uneven heating of the regions of the troposphere by the Sun causes convection currents and winds. ... The chemicals are in an excited state, as they absorb the energy from the Sun. ... The temperature is hot and may be as high as thousands of degrees as the few molecules that are present in the thermosphere receive extraordinary large amounts of energy from the Sun. ... HEATING THE ATMOSPHERE The sun is the source of most of the Earth'...

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

The atmosphere actually radiates more energy to the earth than the sun. ... Using these three pieces of information the IPCC has come to the conclusion that the temperature is indeed rising, this is an unusual event in recent history and that "balance of evidence suggests...a discernible human influence on global climate." ... Further in recent history (geologically speaking) this is the warmest period in 5 centuries. ... Research shows that recent data modeling the output of the sun over time show a large correlation with climate variability. ...

• Word Count: 2525
• Approx Pages: 10
• Has Bibliography

This global warming is the result of the gradual increase of greenhouse gases in the ozone layer, thus trapping the sun's heat in the earth's atmosphere. ... However, developing countries in the construction period must be produced to have a lot of pollution, carbon emissions will be high, the West in the development period, too, but the West is a historical account does not count, as the Anglo-American history, 1,100 tons of carbon emissions per capita in China only 66 tons, not counting the historical account is not fair for developing countries. ...

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

"Chrétien ratifies Kyoto- was the headline on most every daily newspaper in Canada on December 16, 2002. A huge victory for Canada and the world as the most significant as well as the most controversial environmental accord ever was ratified. The Kyoto Treat requires industrialized countries barr...

• Word Count: 2572
• Approx Pages: 10
• Grade Level: Undergraduate