CLIMATE CHANGE Read the following article. Pay special attention to the words in bold.
The ice on Antarctica looks the same from day to day. But scientists know this: the ice is melting1. Ice sheets are very big. Changes in the climate cause them to change very slowly. It usually takes a long time for ice sheets to melt. So what is happening now? The ocean is warming, and big pieces of ice are breaking away and going into the ocean. This is causing the ocean level to rise. The ice is melting six times faster now than in 1979. Why is this happening?
5.5
Human activity is responsible. Transportation, electricity production, and industry are activities that warm the planet. What does this mean for us? Coastal cities, like New York, London, and Tokyo, are in danger of being underwater by the end of the 21st century. We need to make changes now to prevent2 this. Some scientists think that climate change is unstoppable3. We hope it’s not too late. 1 2 3
to melt: to change from a solid to a liquid state to prevent: to stop something from happening unstoppable: impossible to stop
The Japanese icebreaker Shirase researching global warming in Lutzow-Holm Bay, Antarctica
126
Unit 5 Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203 Copyright 2021 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.