Ocean and Aquatic Ecosystems

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Phytoplankton

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Plant-like organisms that float in the photic zone of the ocean and perform photosynthesis

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Salinity

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Amount of salt dissolved in a body of water

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Aquatic Ecosystem

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Contains communities of organisms found in and around a body of water

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Nekton

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Swimming organisms

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Estuary

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Transitional environment where a river empties into the ocean, causing salt & fresh water to mix

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Continental shelf

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The gradually sloping land that extends from the coastline of a continent to the drop-off at the continental slope

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Benthos

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Organisms that live on, or near, the bottom of a body of water

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SONAR

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Method using sound waves to detect depth or location of objects

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Downwelling

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Movement of water in ocean that brings dissolved oxygen down to deeper waters

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Neretic zone

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The area of shallow ocean water above the continental shelf