Sea levels will rise due to the thermal expansion of the oceans. Low-lying areas, such as the coastal regions of Bangladesh, and many small islands, could be seriously affected unless adequate sea defences are built and maintained. Fresh water resources could be affected by saline intrusion as sea levels change. Existing dry land regions may become drier still, resulting in a greater likelihood of desertification. Agricultural output may change adversely in some regions, due to reduced rainfall, but may increase in other areas because CO2 also has a “fertilizing” effect on crops. While most of the work on impacts has been carried out on the agricultural sector, it is not clear that world food supply will be significantly affected: some regions will lose and some will gain. But the regions suffering losses may be some of the poorest in the world. In terms of human health there are similar ambivalent effects: if winter temperatures rise there may be fewer premature deaths due to winter cold. But if summer temperatures also rise there may be added deaths from heat stress. The pattern of the world’s diseases may also change—diseases such as malaria, eradicated from Europe, could return to some areas. Perhaps the most important effects are the ones we know least about. Ecosystems change in response to climate change but, in general, past changes have occurred slowly as temperatures varied over long periods. A rise of 1 or 2° C in just a century is a very fast rate of temperature change, and some ecosystems may not be able to adjust. Even more speculative are the effects of extreme events: for example, the worsening of El Niño, and the potential effects on ocean currents and hence marine productivity.
2006-10-04 19:44:13
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answer #1
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answered by Brandon 2
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The scientific evidence for global warming is absolutely overwhelming despite anything that George Bush could say (He is not King Canute).
There is still some brisk discussion as to how much global warming is caused by our activities leading to enhanced CO2 emissions. Best consensus is that we are responsible for about two thirds of the current warming.
Now, let me be controversial. The biggest single danger at the moment is us rushing into a general cleanup of industry. The dust going into the atmosphere, along with sulphate particles, etc, may be keeping the temperatures down. Probably the best thing we could have at the moment is a Krakatoa eruption (on some deserted place on the earth) dumping a few cubic miles of dust in the atmosphere. That would slow global warming for a few years.
2006-10-04 21:18:19
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answer #2
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answered by andyoptic 4
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NO COME ON! The earth has been in this trend because the start of time and has surely been COOLING the previous many years. human beings ought to pass previous US media in this concern to attain any wise causes. each and every 100 thousand years or so the earths temperature rises as does CO2 stages. that's been an ongoing procedure and could proceed to ensue. I do ought to assert that human toxins is overshadowed through organic occurrences although you at the prompt are not asking this. I trust human beings ought to seem right into a "greener" society because it really is a strong ingredient. international Warming is an straightforward scare tactic to objective to initiate a more beneficial fit way of life.. If this scare tactic wasn't presented about human beings doesn't take such an interest in worrying for our lifestyle. So even with data and the way it really is all bull****, that's no longer a nasty portion of imagine about taking care of our life-giving planet.
2016-10-16 03:36:36
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answer #3
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answered by ? 4
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No reasonable scientist debates the existence of global warming. What is open for debate is what effect humans are having on global warming and what its effects on the planet will be.
2006-10-05 04:50:13
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answer #4
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answered by Shred Guy 6
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Glaciers in both the North and South poles are melting
More storms occur and more frequent than usual
Climates around the world are shifting
2006-10-04 19:07:00
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answer #5
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answered by Midnight Butterfly 4
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Check some of the sites below for the latest "proof" that is coming in. Hope this helps!
2006-10-05 07:29:26
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answer #6
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answered by Yahzmin ♥♥ 4ever 7
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Since there is increase in the average temp of some specific places and the important one is that the level of oceans is increasing day by day and also the great icebergs are vanishing.
2006-10-04 19:11:27
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answer #7
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answered by pavan kumar NC 2
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Ask George Bush and do the opposite
2006-10-05 00:41:28
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answer #8
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answered by Anonymous
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the temperature has risen about 1 degree from 100 years ago, although that seems small it affects the whole world.
2006-10-04 19:05:14
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answer #9
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answered by Guywiththehir 3
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some islands are slowly being flooded do to solar ice caps melting cause higher ocean elevation plus others that other people will put here
2006-10-04 18:59:17
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answer #10
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answered by Matthew Shlmn 5
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