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- 2. Water resources A graphical distribution of the locations of water on Earth
- 3. Water resources Water resources are sources of water that are useful or potentially useful. Uses of
- 4. Water resources 97% of the water on the Earth is salt water. Only three percent is
- 5. Uses of fresh water Water use in power generation and industry is generally described using an
- 6. Agricultural It is estimated that 69% of worldwide water use is for irrigation, with 15-35% of
- 7. Increasing water scarcity Fifty years ago, the common perception was that water was an infinite resource.
- 8. Industrial A power plant in Poland
- 9. Industrial It is estimated that 22% of worldwide water use is industrial. Major industrial users include
- 10. Industrial Water is used in renewable power generation. Hydroelectric power derives energy from the force of
- 11. Industrial Hydroelectric power plants generally require the creation of a large artificial lake. Evaporation from this
- 12. Industrial Pressurized water is used in water blasting and water jet cutters. Also, very high pressure
- 13. Household Drinking water
- 14. Household It is estimated that 8% of worldwide water use is for household purposes. These include
- 15. Recreation Whitewater rapids
- 16. Recreation Recreational water use is usually a very small but growing percentage of total water use.
- 17. Recreation Recreational usage is usually non-consumptive. Golf courses are often targeted as using excessive amounts of
- 18. Water stress Best estimate of the share of people in developing countries with access to drinking
- 19. Water stress The concept of water stress is relatively simple: According to the World Business Council
- 20. Population growth In 2000, the world population was 6.2 billion. The UN estimates that by 2050
- 21. Depletion of aquifers Due to the expanding human population, competition for water is growing such that
- 22. Pollution and water protection Pollution and water protection
- 23. Pollution and water protection Water pollution is one of the main concerns of the world today.
- 24. Pollution and water protection Even if sewage is treated, problems still arise. Treated sewage forms sludge,
- 25. World water supply and distribution Food and water are two basic human needs. However, global coverage
- 26. World water supply and distribution At Earth Summit 2002 governments approved a Plan of Action to:
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