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chapter 7 vocab
| Term | Definition |
|---|---|
| wetland | An area of land that is periodically underwater or whose soil contains a great deal of moisture |
| plankton | The mass of mostly microscopic organisms that float or drift freely in the waters of aquatic (freshwater and marine ) environments |
| nekton | All organisms that swim actively in open water, independent of currents |
| benthos | Organisms that live at the bottom of oceans or bodies of fresh water |
| littoral zone | A shallow zone in a freshwater habitat where light reaches the bottom and nurtures plants |
| benthic zone | The bottom region of oceans and bodies of fresh water |
| eutrophication | An increase in the amount of nutrients such as nitrates in a marine or aquatic ecosystem |
| estuary | An area where fresh water from rivers mixes with salt water from the ocean the part of a river where the tides meet the river current |
| salt marsh | A maritime habitat characterized by grasses, sedges, and other plants that have adapted to continual, periodic flooding salt marshes are found primarily throughout the temperate and subarctic regions |
| mangrove swamp | A tropical or subtropical marine swamp that is characterized by the abundance of low to tall trees, especially mangrove trees |
| barrier islands | A long ridge of sand or narrow island that lies parallel to the shores |
| coral reef | A limestone ridge found in tropical climates and composed of coral fragments that are deposited around organic remains |
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