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| synthdude |
 Posted: Wed Sep 07, 2005 2:21 pm Post subject: How the environment is changing... MUST SEE! |
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Joined: 06 Dec 2004
Posts: 910
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While the effect of human activity on the global climate is hotly debated, physical signs of environmental change are all around us.
Some scientists say an increase in the rate of melting of the world's glaciers is evidence of global warming.
Argentina's Upsala Glacier was once the biggest in South America, but it is now disappearing at a rate of 200 metres per year.
Other scientists say its reduction is due to complicated shifts in glacial dynamics and local geology.
The image on the left is from an 1859 etching of the Rhone glacier in Valais, Switzerland, and shows ice filling the valley.
In 2001, the glacier had shrunk by some 2.5km, and its 'snout' had shifted about 450 metres higher up.
Some scientists predict that a warmer climate will trigger more violent storms, which will cause increased rates of coastal erosion.
This is a section of shoreline at Cape Hatteras in North Carolina in the USA, pictured in 1999 and 2004. The southern United States and Caribbean region were battered by a series of powerful hurricanes last year.
Rising sea levels are also expected to speed up coastal erosion.
The Intergovernmental Panel on Climate Change (IPCC), a consortium of several thousand independent scientists, predicts that sea levels could rise by between 9 and 88cm in the next century.
This would threaten low-lying islands such as Tuvalu in the Pacific. These images, taken on the same day this year, show the effects of a higher than usual tide.
As the climate warms up, mountainous regions may experience lower levels of snowfall.
This image shows Mount Hood in Oregon at the same time in late summer in 1985 and 2002.
Tree-eating wood beetles are likely to benefit from a warmer climate and reproduce in ever-increasing numbers.
These images show damage to White Spruce trees in Alaska caused by the pests. <b>Source: BBC</b>
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| ETERNAL |
| Posted: Thu Sep 08, 2005 10:01 am Post subject: |
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Mod Squad
Joined: 01 Aug 2005
Posts: 3382
Location: Dreamland
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uuuuuuuuuu..................
the end is near
arggggggggggghhhhhhhhhhhhhhh
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| djemi |
| Posted: Thu Sep 08, 2005 1:54 pm Post subject: |
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Joined: 19 Aug 2005
Posts: 38
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Kadang-kadang dok pikir bendanya mcam nie, menakutkan jugak.
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