Scientific Facts on Water Resources



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Source document:
Scientific Facts on
UN-Water WWAP (2006)
Summary & Details:
GreenFacts
Water Resources
Level 2 - Details on Water Resources
1.
Introduction: pressures on water resources
..........................................................
2
2.
Where and in what forms is water available on Earth?
........................................
2
2.1
How does water move from the atmosphere to the ground and back?....................................3
2.2
How much freshwater is found at the Earth’s surface?..........................................................3
2.3
How much freshwater can be found underground?..............................................................4
3.
How much freshwater is available in different countries?
..................................
5
4.
How can human actions seriously affect water resources?
................................
5
4.1
How are aquatic ecosystems threatened by sediment in water?.............................................5
4.2
How can different kinds of pollution affect water resources?.................................................6
4.3
What are the consequences of excessive water withdrawal?..................................................7
4.4
How is climate change affecting water resources?...............................................................7
5.
How can the growing demand for water be met?
..................................................
8
5.1
Intercepting, diverting, storing and transferring water.........................................................8
5.2
Water re-use..................................................................................................................9
5.3
Desalination...................................................................................................................9
6.

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