Water conservation

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  • 1. Water conservation André Jun Nishizawa 30th of may 2008 Teacher: Michael Coppin
  • 2. Before starting ● 3 parts – Importance of water – Demand, figures and problems – Solutions
  • 3. Importance of water - Sustenance of man - Essential for the human body
  • 4. Importance of water On Earth ● 97.5% is salt water ● 2.5% is fresh water
  • 5. Importance of water On Earth ● 97.5% is salt water ● 2.5% is fresh water ● 2/3 snow, ice, glaciers ● 1/3 lakes, rivers, underground (96%)
  • 6. Demand, figures and problems Year Water withdrawn 1900 500 km³ 2000 4000 km³ 2025 5000 km³
  • 7. Demand, figures and problems Aquifer ●~ underground water ●increasing demand ●bad aquifers