global warming .ppt

What we should do
• National efforts • Individual efforts
National efforts
• Try to agree on a major new international treaty to curb the gases that promote global warming among all nations. • Make laws to protect environment in every nation.
Global temperature change
What’s more , scientists expected that the average global surface temperature could rise 0.6-2.5℃ in the next 90 years , and 1.45.8℃ in the next century!
Flood More than 3 million of them- that is more than 10 percent of Australia's population! - have been affected by this: massive flooding in eastern Australia. Authorities calling this one of the most costly disasters in Australia's history. The floods have had a big impact on crops, on tourism, retail and manufacturing.
The change in the surface air temperature ,referred to as the global temperature，brought about by the enhanced greenhouse effect (温室效应), which is induced by emission of greenhouse gases into the air.
Prague’s （布拉格，The Czech capital ） temperature reach the peak at the same time for nearly 60 years！
Global Warming
By Xu hang 8th,April,2011
Content(4 whats):
1. 2. 3. 4. What is global warming? What cause global warming? What is the impact of global warming? What we should do to face global warming?
What’s global warming
What cause global warming
• Greenhouse effect • Human activities-emission
Greenhouse effect
Human activities-emission
1.Deforestation（森林砍伐） （森林砍伐） Desertification(沙漠化 沙漠化) 沙漠化
Individual efforts
• Go to wok by bus , foot … • Use fewer electronic products • Say no to plastic bags
What’s the impacts of global warming
Alaska in 2000 Alaska in 2008
2. Industrial production
What’s the impact of global warming
Drought Guangxi, Chongqing, Sichuan, Guizhou , Yunnan, five provinces have been caused by a severe drought 51.049 million people were affected, tolls direct economic losses of 19.02 billion yuan.
The Yellow River starting point in 2002
The Yellow River starting point in 2007
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