Climate change is a problem that affects people all over the world. That is (1) Answer the United Nations decided to (2) Answer action to limit greenhouse gas (GHG) emissions. In 2002, representatives of many countries met in Kyoto, Japan. Many of them signed a United Nations treaty (3) Answer the Kyoto Protocol. The Kyoto Protocol set limits (4) Answer GHG emissions. Its goal was to (5) Answer emissions by about five percent by 2012. The greenhouse gases that it hoped to reduce were carbon dioxide, methane, nitrous oxide, sulfur hexafluoride, and so on. The treaty set emissions limits only for developed countries (6) Answer European countries and the United States. They have produced the (7) Answer GHG emissions in the past. Although some developing countries did not have limits set on their emissions, the treaty also set up ways (8) Answer them to follow.

Climate change is a problem that affects people all over the world. That is (1) ....when...
 the United Nations decided to (2) ....take..
 action to limit greenhouse gas (GHG) emissions. In 2002, representatives of many countries met in Kyoto, Japan. Many of them signed a United Nations treaty (3) ...about....
 the Kyoto Protocol. The Kyoto Protocol set limits (4).....on.... 
 GHG emissions. Its goal was to (5)....reduce.... 
 emissions by about five percent by 2012. The greenhouse gases that it hoped to reduce were carbon dioxide, methane, nitrous oxide, sulfur hexafluoride, and so on. The treaty set emissions limits only for developed countries (6)....like... 
  European countries and the United States. They have produced the (7) ....large amount.....
 GHG emissions in the past. Although some developing countries did not have limits set on their emissions, the treaty also set up ways (8)...for....  them to follow.