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The Hydrologic Cycle - An Earth Science System Sat Sep 11, 2010 8:55 am
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| Earth Science involves the study of systems such as the hydrologic cycle. This type of system can only be understood by using a knowledge of geology (ground water), meteorology (weather and climate), oceanography (ocean systems) and astronomy (energy input from the sun). The hydrologic cycle is always in balance - inputs and withdrawals must be equal. Earth scientists would determine the impact of any human input or withdraw from the system. NOAA image created by Peter Corrigan. |
