(B)Farewell,an animation created by a Taiwanese student, features the very lastpolar bear saying farewell on a melting iceberg before it drowns.This short film shows 22 serious global warming hasbecome. As the animated film presents, polar bears are facingextinction. They have been hunted and affected by water and airpollution. 23 , they are threatened by global warming.Arctic ice is melting away, and northern seals are disappearing. Withfewer places to live in and less food to eat, there are 24 polar bears. They are dying so fast that within decades, all of themmay become extinct. Unfortunately, polar bears are not the onlyvictims of global warming. Global warming affects all the plants andanimals on our planet. The burning of fuels creates huge amounts ofcarbon dioxide, 25 absorbs and keeps the sun’s heat,warming the earth. The warmer our planet becomes, the faster the icesurrounding the North Pole and the South Pole melts away. If theworldwide sea level 26 rising, small islands and some bigcities may be underwater by the end of this century. Global warmingalso leads to severe climate change. 27 the heat wave thatstruck Europe in 2004 27 Hurricane Katrina in 2005 tookaway tens of thousands of lives. Not only the government but everyone of us should take action to reduce global warming, 28 it might be our turn to say farewell to the earth.