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MIA6
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Post by MIA6 » Sun Feb 25, 2007 4:27 am

What causes a melting of the polar ice caps? I know it relates to the global warming, but i don't know how come ice caps melt, is anything to do with acid rain or greenhouse effect or the rise in sea level?
Thanks for help.

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Locus
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Post by Locus » Sun Feb 25, 2007 11:10 am

Where polar caps melted? Increasing of see level is so far not detected.
Evolution will arrange everything

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Dr.Stein
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Post by Dr.Stein » Sun Feb 25, 2007 2:43 pm

The increasing temperature, hole in the sky etc.
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mith
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Post by mith » Sun Feb 25, 2007 6:07 pm

Watch Al Gore's Inconvenient Truth...it might win the documentary oscar this year.
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
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Post by Darby » Sun Feb 25, 2007 8:00 pm

If the average temperature of the air around land-bound ice, or the water around floating ice, rises, at least some of the ice will melt. Landbound ice will melt into the oceans, raising levels (but probably slowly); floating ice-melt will have a minor effect on levels since the volume of the ice in the water and the volume of the meltwater are very similar. Also, the exposed water and land will absorb more light, warm up, and contribute to a temperature rise in the polar regions. Warming tundra may also release greenhouse gases.

The hole in the sky is in the ozone - there may be some synergy with global warming, but the mechanisms I've seen suggested aren't well understood. For the most part, ozone depletion probably isn't a major player in global warming.

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