• Unit 11-Water resources

    Key Points

    • Most of the water on Earth is saltwate with only about 3% as fresh water.
    • In the water cycle, water is transformed and transferred.
    • Human use of water may be sustainable or unsustainable.

    Key words:

    evaporation condensation freezing
    melting transpiration evapotranspiration
    global water budget hydrological cycle El Nino
    ENSO La Nina upwelling
    NAO Gulf Stream aquifer
    salinization desalinization ocean currents
    energy distribution heat capacity

Last Modified on February 23, 2015