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U.S. SEASONAL DROUGHT OUTLOOK FROM NOAA's CLIMATE PREDICTION CENTER
Drought is a normal, recurrent feature of climate, although many erroneously consider it a rare and random event. It occurs in virtually all climatic zones and no region in North America is immune to periodic droughts. NOAA's monthly U.S. Drought Outlook provides valuable information about anticipated drought conditions across the United States.
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NATIONAL GEOPHYSICAL DATA CENTER'S BATHYMETRY, TOPOGRAPHY, AND RELIEF DATA
Beneath the world's oceans lie rugged mountains, active volcanoes, vast plateaus and almost bottomless trenches. The deepest ocean trenches could easily swallow up the tallest mountains on land. Around most continents are shallow seas that cover gently sloping areas called continental shelves, which reach depths of about 650 feet (200 meters).
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