With the development of science,scientists have discovered more about the world.(1)____________________________.No matter what action is taken, scientists say there are already enough greenhouse gases in the atmosphere to cause a major warming.As a result,scientists and government officials are focusing on how society might adapt to rising sea levels,changing agricultural zones, changing climates and other problems.(2)___________________________________________________.Agricultural researchers are developing heat-resistant and draught-resistant crops that might replace traditional crops if the climate changes.How long it will take for maximum warming to be reached is uncertain because the oceans slow such warming.Most scientists expect the maximum warming to take place by the second half of this century.(3)____________________________________________.Some leading experts regard a rise of 1 meter,a little more than three feet.
scientists say that world coastal areas must prepare now for a rise in sea levels
already state and local government along the coast of the United States are starting to plan for a possible long-term rise in the sea level and a few have taken action to cope with it
if levels of green house gases in the atmosphere double, sea levels will rise estimates of the average rises are from 1.5 feet to 6.5feet
sciencist say world coast area must prepare now for rise in sea levers.
already, state and local government along the coast of Unite State are starting to plan a possible long time rise in the sea lever.and a few have take action to cope with it.
if levers of green house gases in the atmosphere double, sea lever will rise extemate of the average dries are from 1.5 feet to 6.5 feet.
发表于 2014-9-25 10:14
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发表于 2014-9-26 10:29
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