In this chapter you can find the following figures:

• Figures
  • 5.1. Distribution of water on Earth
  • 5.2. The water cycle
  • 5.3. Evolution of the surface of Lake Chad between 1963 and 2007
  • 5.4. Diagram of the water circulation in an aquifer
  • 5.5. Distribution of water resources and population by continent
  • 5.6. Evolution of water consumption between 1900 and 2025
  • 5.7. Water consumption in the world by major sectors
  • 5.8. Water consumption by major sectors in Catalonia
  • 5.9. Source of the water used in Catalonia by sector of activity
  • 5.10. Wastewater treatment station