全球变暖的资料.pptxVIP

全球变暖的资料第1页/共30页 Looking,Listening,feeling and thinking ……Facing the lovely but helpless animals ,What can we do for them?第2页/共30页 Global warming is an increase in the average temperature of the surface of the Earth (air and oceans) over the last 100 – 200 years .第3页/共30页 The reality of Global waming第4页/共30页 Recently, global warming has become widely accepted as fact第5页/共30页 Copenhagen Meeting World Climate Conference in Copenhagen, is the full name United Nations Framework Convention on Climate Change, 15th Meeting of the Parties and the Kyoto Protocol 5th Conference of the Parties, the Conference also known as the United Nations Climate Change Conference in Copenhagen, 7 December 2009 to 18 , held in Copenhagen, Denmark.第6页/共30页 第7页/共30页 The facts of the Global warming the sea ice 第8页/共30页 第9页/共30页 第10页/共30页 What causes Global warmingGlobal Warming is caused by many things. The causes are split up into two groups, man-made causes, and natural causes?第11页/共30页 Man-made CausesMan-made causes probably do the most damage. There are many man-made causes. Pollution is one of the biggest man-made problems. Pollution comes in many shapes and sizes. Burning fossil fuels such as coal, or oil is one thing that causes pollution. When fossil fuels are burned they give off so much CO2 which lead the rising of sea lever, melting of ice in the Antarctic and increase in temperature. 第12页/共30页 Another major man-made cause of Global Warming is population. The population is increasing so quickly that means more food and methane.For there will be more burning of fossil fuels and more agriculture.Man-made Causes第13页/共30页 Natural CausesNatural causes are causes created by nature.One natural cause is a release of methane gas from arctic tundra and wetlands. Methane is a greenhouse gas. A greenhouse gas is a gas that traps heat in the earths atmosphere. If there is no such gas in the atmosphere, the earth will be too cold for any living organism to survi