Water

• Water: universal solvent and chemically indestructible
• Freezing point: 0 degree celsius

  Boiling point: 100 degrees celsius
• Saline water is a good conductor of electricity
• Hydrologic or Water Cycle: the continuous movement of water from the atmosphere to the Earth and back to the atmosphere.

  storage - evaporation/transpiration - condensation - precipitation - run-off
• Earth is only 3% fresh water