Global Issue

I read an article on global warming. The article was published by the United States Environmental Protection Agency. The article talked about some of the causes of global warming. It said that the average temperature has increased by one degree. Also, some other effects will be that the sea level rises because the glaciers are melting, and that ecological systems may suffer. Though scientists do not know exactly what will happen, they believe that it won't overall be good. One positive effect that was noted was that places that are too cold to currently grow crops may have the chance to in the future.