Friday, January 21, 2011

Question 6

1. What causes climate change? The NAOO says how the greenhouse effect is causing climate change. "Without the greenhouse effect, the temperature of the earth would be about zero degrees F. This means that the greenhouse effect is helping, but now since there are so many greenhouse gases like carbon dioxide being released so frequently, the greenhouse effect is going to be too strong. 2. Is the human activity contributing to climate change? Yes, human activity has been immensely contributing to the climate change. NAOO says, "Human activity has been increasing the concentration of greenhouse gases in the atmosphere (mostly carbon dioxide from combustion of coal, oil, and gas; plus a few other trace gases)." Most people in the united states drive a car everyday and factories are working everyday. This means that there are harmful gases being released into the air at a very high rate, and the human population is increasing this. 3. Is the climate warming? Yes the climate has been warming in the past 100 years. The NAOO states,"Lastly, seven of the eight warmest years on record have occurred since 2001 and the 10 warmest years have all occurred since 1995." But the NAOO also said how some areas are actually getting a little bit colder. Areas like Southeastern U.S. and parts of the North Atlantic. 4. If global warming is real, why has the East Coast of the USA been hit with massive blizzards the last two years? The East Coast, USA has been hit with massive blizzards the last two years because they are experiencing the "blanket effect". This is because when the greenhouse effect is greatly enhanced, it makes some areas on the lower part of the stratosphere cool off, which the East Coast has been in the winter. 

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