world water resources思维导图
有关世界水资源的英文阅读理解思维导图
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思维导图大纲
world water resources思维导图模板大纲
paragraph 1
about 119000 km3 of fresh water precipitates
evaporates
absorbed by plants
about 43000 km3 flows though the world's rivers
9000km3 for human use
6000km3 withdraw from all sources
paragraph 2
In fresh water
69% for agriculture
23% for industry
8% for direct human use
paragraph 3
population and GDP forecast
2016:7.208 billion people,$U.S. 74 trillion GDP
2050:9.7 billion people,$U.S. 105 trillion GDP
paragraph 4
the water pronlem
maintain and improve water quality
insuure people drink safe water
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