2009年3月31日星期二

Sea level is dropping!




When we talk about the sea, what is the first impression in your brain? Is that deep, vast or never vanish?
To be honest, I always insist that the ocean in the world can never disappear and it will last forever. However, when I saw this informational text in magazine, I have to face a serious issue that the sea level is dropping century by century, and it may disappear one day.
“Computer models suggest that sea level them was about 170 meters higher than today. Many areas that are now dry, including northern Europe. If, overall, ocean basins continue to drop as expected, 80million years from now sea levels will have dropped another 120m.”, said by R.Dietmar Muller, a geophysicist in the University of Sydney. ( March 8, 2008 VOL.173 P150)
This serious information leads us to have a reflection, what is the main factor to cause this problem? How to improve this risk? What should we do to control this tension situation? In my opinion, I think one of the reasons to cause this issue is the mass of heat in urban areas. The heat in urban leads the temperature increase and cause the water evaporate quickly. This problem can be solved by limit the air pollution. But this stills a little part of the factor to lead this issue. Try to image that, as time goes by, if we do not care much about this risk and keep this issue developing, there will not have any sea in the world. Without the water in the earth, how can people survive?
(Photos from internet)

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