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Questions and Answers
Phytoplankton, free-floating ______ plants, microscopic algae are essential to support the marine food web.
photosynthetic
Open ocean (middle of the Pacific Ocean) communities vary from surface to ______ zones.
hadal
Coastal Zones Shoreline communities vary in terms of depth, ______, nutrient concentrations, and temperature.
light
Estuaries have high biological ______ and diversity due to the abundant nutrients that came from the land.
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Excessive loads of nutrients may stimulate bacterial growth that consumes ______ in the water, which is more than 200 "dead zones" occur in coastal zones.
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Coral ______ are known in marine ecosystems because of their exceptional biological productivity and their diverse, beautiful organisms.
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Calcium-rich coral skeletons build-up to make ______, atolls, and islands.
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Reefs protect shorelines and shelter of countless species of ______, worms, crustaceans, and other life-forms.
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But like terrestrial deserts, the open ocean has areas of ______ richness and diversity.
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Fish and ______ abound in regions such as the equatorial Pacific and Antarctic oceans, where currents distribute nutrients.
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