Graham, Steve, <br/><br/>
The Water Cycle. 
Steve Graham and others. 
 -  Earth Observatory,  2004. 
 - SIRS Enduring Issues 2005.  Article 10,  Science,  1522-3264; .
<br/><br/> Articles Contained in SIRS Enduring Issues 2005.  Originally Published: The Water Cycle, May 27, 2004; pp. n.p.. 
<br/><br/> "As seen from space, one of the most unique features of our home planet is the water, in both liquid and frozen forms, that covers approximately 75% of the Earth's surface. Believed to have initially arrived on the surface through the emissions of ancient volcanoes, geologic evidence suggests that large amounts of water have likely flowed on Earth for the past 3.8 billion years." (EARTH OBSERVATORY) This article examines Earth's water cycle. 
<br/><br/><label>ISSN: </label>1522-3264; 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Artificial satellites in meteorology<br/>Climatic changes<br/>Condensation<br/>Earth Observing System<br/>Evaporation<br/>Hydrologic cycle<br/>Precipitation (Meteorology)<br/>Remote-sensing images<br/>Runoff<br/>Water table<br/>Water vapor
<br/><br/><label>LC Class. No.: </label>AC1.S5 
<br/><br/><label>Dewey Class. No.: </label>050