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Chapter 7 - Aquatic Ecosystems

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