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| a powerful, warm, and swift ocean current flowing from the Gulf of Mexico at the tip of Florida along the coastline of the U.S. and then eastward across the North Atlantic |
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| a very wide and flat section of the deep ocean floor made of thick layers of sediment |
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| the area of the ocean at the bottom of the continental slope; vast underwater hill made from tons of accumulated sediment |
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| the underwater edge of a continent |
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| a steep slope that separates the continental shelf from the deep ocean basin |
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| a body of water moving very quickly in a definite direction through surrounding waters that are moving more slowly; caused by wind patterns and differences in water densities |
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| a deep place in a body of water |
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| all the interactions in which organisms eat each other in a community |
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| mountain range rising midway above the ocean floor |
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| any of the five large bodies of salt water that cover the Earth's surface; the depth, salinity, and temperature of the ocean affect where different types of marine organisms can live |
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| microscopic plant-like organisms that form the base of the ocean food web |
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| microscopic free-floating organisms |
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| a measure of the amount of salt in the ocean's waters |
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| the rising and falling water levels of oceans, bays, gulfs, and parts fo many rivers caused by the forces of gravity between the Earth, moon, and sun |
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| a very long and narrow canyon-like depression deep in the ocean floor |
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| created by wind blowing over a body of water's surface; the size of the waves depend son the speed of the wind and how far it can travel unobstructed |
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| microscopic animal-like creatures that drift or move with ocean currents |
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