Unit 1 Individual Project
Lower Division Capstone
Global Warming: Fact or Fiction
1. What has happen so far?
2. Contributing factors
3. What could happen in the future?
4. How to help stop global warming
What has happened so far?
The average temperatures around the world have raised about 1.4 degrees Fahrenheit since 1880. The last two decades of the 20th century had the hottest temperatures in 400 years if not for several millennia. Eleven of the past twelve years are among the dozen warmest since 1850. The average tempters in Alaska, western Canada, and eastern Russia have risen at twice the global average.
In the arctic the ice is disappearing at alarming speeds, by 2040 it is possible that the aortic will have its first ice free summer, if not sooner than that. The animals in and around the arctic are already showing affects from global warming. The glaciers and snow in the mountains is melting quickly as well. At Montana's Glacier National Park there are currently twenty-seven glaciers, in 1910 there were one hundred and fifty. In the Northern Hemisphere, thaws also come a week earlier in spring and freezes begin a week later.
The coral reefs are already highly sensitive to small changes in the water temperatures, bleached out or died off the worst ever recorded in the year 1998. Some areas of coral reefs are bleaching rates of 70 percent and over the next fifty years will increase as the sea temperatures rise. The up rise of extreme weather also contributes to climate change such as the rise of heat waves, wildfire, and tropical storms.
Industrialization, deforestation, and pollution have increased atmospheric concentrations of all greenhouse gases that help trap heat near Earth's surface such as water vapor, carbon dioxide, methane, and nitrous oxide. People put more carbon dioxide into the atmosphere faster than the plants and oceans can absorb it. Even if emissions of these...