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A (2015·重庆一中一诊)Based on new analysis predict that within the next eighty years，current world climate zones could shift and some could completely disappear.Polar regions will get colder while tropical regions will get even hotter，forcing animals to migrate(迁徙) north.e could lead to the spread of diseases.Tropical storms and hurricanes will not only increase but may also become more intense.If the changes come too quickly，animal and plant species may not be able to adapt fast enough and could disappear. According to Science Daily，a new study predicts that by the year 2100，many of today’s familiar climates will be replaced by climates unknown in today’s world.It is urgent that we reduce the risks of these farreaching consequences for the whole world.The planet itself has been showing signs of change.In 2004，a serious tsunami created by a major earthquake killed thousands in Sumatra and in 2008，thousands died in China because of another severe earthquake.Egypt was hit in 2009 with a major earthquake and Haiti was devastated in 2010 by yet another massive earthquake. Within just the last few months，new reports from around the world have been coming in and most agree that our climate situation is much worse than previously thought.At this point，it doesn’t matter what is causing it，but rather，what can be done about it.What’s more，our world is getting more and more unstable every year.There is war and threat of war everywhere.Natural disasters are becoming more frequent and serious. | 
