Scientists made an alarming discovery in the 1980s. They found out that the average temperature of the Earth's surface was slowly rising. This trend is called global warming. Today we know that global warming is increasing because more and more gases get into the atmosphere.
Contents : 7 pages
-Causes of global warming
-Possible effects of global warming
-The Kyoto protocol
The sample contains a complete non-printable preview of the whole module (text- and worksheets)