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Chapter 7 - Aquatic Ecosystems

Name: __________________________
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Across
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The amount of dissolved salts water contains which determines the types of organisms in an aquatic ecosystem.
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A freshwater wetland that contains woody plants.
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The zone found at the bottom of a lake or pond, where sunlight, oxygen, and temperatures are low.
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Limestone ridges built by tiny coral animals called coral polyps.
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The shoreline of the Gulf of Mexico and the Atlantic Coast of the United States are dominated by _________.
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An increase in amount of nutrients in an aquatic ecosystem which can be increased by runoff.
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Swamps located along coastal areas of tropical and subtropical zones.
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Bottom-dwelling organisms such as mussels, worms and barnacles.
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A freshwater wetland that contains non-woody plants.
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Industrial waste and ________ is the biggest source of coastal pollution in the US.
Down
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In a lake or pond, the ________ zone is nutrient rich, near the shore, and contains diverse and abundant life.
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Microscopic plants which produce most of the food for an aquatic ecosystem.
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Microscopic animals which live in aquatic ecosystems.
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________ Islands typically run parallel to the shore and help protect the mainland and wetlands.
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Free swimming organisms such as fish, turtles, and whales.
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Temperature, __________, oxygen, salinity, and nutrients determine which organisms live in which areas of water.
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The organisms that float near the surface of the water.
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An area in which freshwater from a river mixes with salt water from the ocean, resulting in a productive ecosystem.
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Land which is periodically underwater.