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Tides


See Featured 2 Resources
Tides and Water Levels examines the complex systems that govern the movement tides and water levels. Learn what causes tides, what determines their frequencies and variations, and how they're monitored and...  (National Oceanic and Atmospheric Administration)
Ocean Service Education provides online tutorials on corals, currents, estuaries, geodesy (global positioning), pollution, and tides; case studies on an oil spill and an invasive species (Lionfish); two...  (National Oceanic and Atmospheric Administration)
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