Recently,global warming has become a hot topic among people. It results from serious airpollution. As the environmenta

People around the world may feel that the climate has been getting steadily warmer and warmer in recent years. Places wh

Recently,global warming has become a hot topic among people. It results from serious airpollution. As the environmenta

People around the world may feel that the climate has been getting steadily warmer and warmer in recent years. Places wh

Many people believe that human activity is causing the earth’s temperature to rise. They say that this global warming wi

Many people believe that human activity is causing the earth’s temperature to rise. They say that this global warming wi