Summary: More than 70 percent of the Earth's surface is covered by water. Use this video to impress upon your students the importance of the seven seas to people, the marine food chain, and the planet as a whole. Topics include the various kinds of currents and the forces that influence them, tides and waves (what they are, what causes them, and how they're classified), features of the seabed, and the...

Format: software, multimedia

Publisher / Publication Date: Films Media Group 2007

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